@misc{BuschBestle, author = {Busch, Jochen and Bestle, Dieter}, title = {Optimisation of lateral car dynamics taking into account parameter uncertainties}, series = {Vehicle System Dynamics}, volume = {52}, journal = {Vehicle System Dynamics}, number = {2}, issn = {1744-5159}, pages = {166 -- 185}, abstract = {Simulation studies on an active all-wheel-steering car show that disturbance of vehicle parameters have high influence on lateral car dynamics. This motivates the need of robust design against such parameter uncertainties. A specific parametrisation is established combining deterministic, velocity dependent steering control parameters with partly uncertain, velocity independent vehicle parameters for simultaneous use in a numerical optimisation process. Model-based objectives are formulated and summarized in a multi-objective optimisation problem where especially the lateral steady state behaviour is improved by an adaption strategy based on measurable uncertainties. The normally distributed uncertainties are generated by optimal Latin hypercube sampling and a response surface based strategy helps to cut down time consuming model evaluations which offers the possibility to use a genetic optimisation algorithm. Optimisation results are discussed in different criterion spaces and the achieved improvements confirm the validity of the proposed procedure.}, language = {en} } @inproceedings{AlbertBestle, author = {Albert, Moritz and Bestle, Dieter}, title = {Automatic Design Evaluation of Nacelle Geometry Using 3D-CFD}, series = {15th AIAA/ISSMO Multidisziplinary Analysis and Optimization Conference, AIAA 2014-2039, Atlanta, 2014}, booktitle = {15th AIAA/ISSMO Multidisziplinary Analysis and Optimization Conference, AIAA 2014-2039, Atlanta, 2014}, isbn = {978-1-62410-283-7}, doi = {10.2514/6.2014-2039}, language = {en} } @inproceedings{AmtsfeldLockanBestleetal., author = {Amtsfeld, Philipp and Lockan, Michael and Bestle, Dieter and Meyer, Markus}, title = {Accelerated 3D Aerodynamic Optimization of Gas Turbine Blades}, series = {ASME Turbo Expo 2014, Turbine Technical Conference and Exposition, Volume 2B: Turbomachinery, D{\"u}sseldorf, Germany, June 16-20, 2014}, booktitle = {ASME Turbo Expo 2014, Turbine Technical Conference and Exposition, Volume 2B: Turbomachinery, D{\"u}sseldorf, Germany, June 16-20, 2014}, publisher = {ASME}, address = {New York, NY}, isbn = {978-0-7918-4561-5}, pages = {9}, language = {en} } @inproceedings{GaunHuppertzBestle, author = {Gaun, Lilia and Huppertz, Andr{\´e} and Bestle, Dieter}, title = {Hot-to-Cold CAD Geometry Transformation of Aero Engine Parts Based on B-Spline Morphing}, series = {ASME Turbo Expo 2014, Turbine Technical Conference and Exposition, Volume 2B: Turbomachinery, D{\"u}sseldorf, Germany, June 16-20, 2014}, booktitle = {ASME Turbo Expo 2014, Turbine Technical Conference and Exposition, Volume 2B: Turbomachinery, D{\"u}sseldorf, Germany, June 16-20, 2014}, publisher = {ASME}, address = {New York, NY}, isbn = {978-0-7918-4561-5}, pages = {12}, language = {en} } @inproceedings{JankeKargerGaunetal., author = {Janke, Christian and Karger, Kai and Gaun, Lilia and Bestle, Dieter and Huppertz, Andr{\´e}}, title = {3D CFD Compressor Map Computation Process Accounting for Geometry Changes due to Off-Design Operation Loads}, series = {ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, Volume 2B: Turbomachinery, D{\"u}sseldorf, Germany, June 16-20, 2014}, booktitle = {ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, Volume 2B: Turbomachinery, D{\"u}sseldorf, Germany, June 16-20, 2014}, publisher = {ASME}, address = {New York, NY}, isbn = {978-0-7918-4561-5}, pages = {12}, language = {en} } @inproceedings{PoehlmannBestle, author = {P{\"o}hlmann, Fiete and Bestle, Dieter}, title = {Contradictory Integer Objective Approaches for Mixed-variables Evolutionary Optimization Problems}, series = {International Conference on Engineering and Applied Sciences Optimization (OPT-i), Kos, Griechenland, 2014}, booktitle = {International Conference on Engineering and Applied Sciences Optimization (OPT-i), Kos, Griechenland, 2014}, isbn = {978-960-99994-5-8}, language = {en} } @inproceedings{AngersbachBestle, author = {Angersbach, Andreas and Bestle, Dieter}, title = {Optimization of Air Distribution in a Preliminary Design Stage of an Aero-Engine Combustor}, series = {14th AIAA Aviation Technology, Integration, and Operations Conference, Atlanta, 2014}, booktitle = {14th AIAA Aviation Technology, Integration, and Operations Conference, Atlanta, 2014}, isbn = {978-1-62410-282-0}, doi = {10.2514/MATIO14}, language = {en} } @inproceedings{LockanAmtsfeldBestleetal., author = {Lockan, Michael and Amtsfeld, Philipp and Bestle, Dieter and Meyer, Marcus}, title = {Non-Linear Sensitivity Analysis Based on Regression Trees with Apllication to 3D Aerodynamic Optimization of Gas Turbine Blades}, series = {International Conference on Engineering and Applied Scieces Optimization (OPT-i), Kos, Griechenland, 2014}, booktitle = {International Conference on Engineering and Applied Scieces Optimization (OPT-i), Kos, Griechenland, 2014}, isbn = {978-960-99994-5-8}, language = {en} } @misc{BestleAbbasRui, author = {Bestle, Dieter and Abbas, Laith K. and Rui, Xiaoting}, title = {Recursive eigenvalue search algorithm for transfer matrix method of linear flexible multibody systems}, series = {Multibody System Dynamics}, volume = {32}, journal = {Multibody System Dynamics}, number = {4}, issn = {1573-272X}, doi = {10.1007/s11044-013-9399-y}, pages = {429 -- 444}, language = {en} } @misc{AjalaBestleRauh, author = {Ajala, Oussama and Bestle, Dieter and Rauh, Jochen}, title = {Modeling and Control of an Electro-Hydraulic Active Suspension System}, series = {Archive of Mechanical Engineering}, volume = {60}, journal = {Archive of Mechanical Engineering}, number = {1}, issn = {0004-0738}, pages = {37 -- 54}, language = {en} } @misc{BestleFunke, author = {Bestle, Dieter and Funke, Torsten}, title = {Physics Based Model of a Stroke-dependent Shock Absorber}, series = {Multibody System Dynamics}, volume = {30}, journal = {Multibody System Dynamics}, number = {2}, issn = {1573-272X}, pages = {221 -- 232}, language = {en} } @inproceedings{KupijaiBestleKickenweitz, author = {Kupijai, Philipp and Bestle, Dieter and Kickenweitz, D.}, title = {System Integration as Key for Improving and Speeding up the Preliminary Design Phase of Aero Engines}, series = {Abstracts, Simulia community conference proceedings, May 22-24, 2013, Vienna, Austria,}, booktitle = {Abstracts, Simulia community conference proceedings, May 22-24, 2013, Vienna, Austria,}, pages = {10 -- 11}, language = {en} } @inproceedings{AngersbachBestleEggels, author = {Angersbach, Andreas and Bestle, Dieter and Eggels, Ruud}, title = {Automated Combustor Preliminary Design Using Tools of Different Fidelity}, series = {Proceedings of ASME Turbo Expo 2013, San Antonio, Texas, USA , June 3-7, 2013, Volume 1A: Combustion, Fuels and Emissions, Paper GT2013-94411}, booktitle = {Proceedings of ASME Turbo Expo 2013, San Antonio, Texas, USA , June 3-7, 2013, Volume 1A: Combustion, Fuels and Emissions, Paper GT2013-94411}, publisher = {ASME}, address = {New York}, isbn = {978-0-7918-5510-2}, pages = {8}, language = {en} } @inproceedings{BestleRui, author = {Bestle, Dieter and Rui, Xiaoting}, title = {Application of the Transfer Matrix Method to Control Problems}, series = {ECCOMAS Thematic Conference on Multibody Dynamics 2013, Zagreb, Croatia, July 1 - 4, 2013}, booktitle = {ECCOMAS Thematic Conference on Multibody Dynamics 2013, Zagreb, Croatia, July 1 - 4, 2013}, editor = {Terze, Zdravko}, address = {Zagreb}, pages = {259 -- 268}, language = {en} } @inproceedings{RuiBestleZhang, author = {Rui, Xiaoting and Bestle, Dieter and Zhang, Jianshu}, title = {A New Form of the Discrete Time Transfer Matrix Method for Multibody Systems}, series = {ECCOMAS Thematic Conference on Multibody Dynamics 2013, Zagreb, Croatia, July 1 - 4, 2013}, booktitle = {ECCOMAS Thematic Conference on Multibody Dynamics 2013, Zagreb, Croatia, July 1 - 4, 2013}, editor = {Terze, Zdravko}, address = {Zagreb}, pages = {643 -- 654}, language = {en} } @inproceedings{AbbasBestleRui, author = {Abbas, Laith K. and Bestle, Dieter and Rui, Xiaoting}, title = {Transfer Matrix Method for the Determination of the Free Vobration of Two Eastically Coupled Beams}, series = {Advanced materials design and mechanics II, selected, peer reviewed papers from the 2013, 2nd International Conference on Advanced Materials Design and Mechanics (ICAMDM 2013), May 17-18, 2013, Kuala Lumpur, Malaysia}, booktitle = {Advanced materials design and mechanics II, selected, peer reviewed papers from the 2013, 2nd International Conference on Advanced Materials Design and Mechanics (ICAMDM 2013), May 17-18, 2013, Kuala Lumpur, Malaysia}, publisher = {Trans Tech Publ.}, address = {Durnten-Zurich [u.a.]}, pages = {301 -- 304}, language = {en} } @inproceedings{WurmBestleKahlbau, author = {Wurm, Andreas and Bestle, Dieter and Kahlbau, Sebastian}, title = {Automotive shift quality optimization based on piecewise monotone interpolation of parameter characteristics}, series = {Engineering Optimization IV, proceedings of the International Conference on Engineering Optimization (Engopt 2014), Lisbon, Portugal, 8-11 September 2014}, booktitle = {Engineering Optimization IV, proceedings of the International Conference on Engineering Optimization (Engopt 2014), Lisbon, Portugal, 8-11 September 2014}, editor = {Araujo, Aurelio L.}, publisher = {CRC Press}, isbn = {978-1-138-02725-1}, doi = {10.1201/b17488-104}, pages = {579 -- 584}, language = {en} } @inproceedings{PoehlmannBestleFlassigetal., author = {P{\"o}hlmann, Fiete and Bestle, Dieter and Flassig, Peter Michael and Hinz, Mich{\`e}l}, title = {Modular Automated Aerodynamic Compressor Design Process}, series = {Advances in Evolutionary and Deterministic Methods for Design, Optimiziation and Control in Engineering and Sciences}, booktitle = {Advances in Evolutionary and Deterministic Methods for Design, Optimiziation and Control in Engineering and Sciences}, editor = {Greiner, David and Galv{\`a}n, Blas and P{\`e}riaux, Jacques and Gauger, Nicolas R. and Giannakoglou, Kyriakos C. and Winter, Gabriel}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-11540-5}, doi = {10.1007/978-3-319-11541-2}, pages = {267 -- 276}, language = {en} } @inproceedings{KargerBestle, author = {Karger, Kai and Bestle, Dieter}, title = {Parametrie Blending and FE-Optimisation of a Compressor Blisk Test Case}, series = {Advances in Evolutionary and Deterministic Methods for Design, Optimiziation and Control in Engineering and Sciences}, booktitle = {Advances in Evolutionary and Deterministic Methods for Design, Optimiziation and Control in Engineering and Sciences}, editor = {Greiner, David and Galv{\`a}n, Blas and P{\`e}riaux, Jacques and Gauger, Nicolas R. and Giannakoglou, Kyriakos C. and Winter, Gabriel}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-11540-5}, doi = {10.1007/978-3-319-11541-2}, pages = {257 -- 266}, language = {en} } @inproceedings{AmtsfeldBestleMeyer, author = {Amtsfeld, Philipp and Bestle, Dieter and Meyer, Marcus}, title = {Direct 3D Aerodynamic Optimization of Turbine Blades with GPU-accelerated CFD}, series = {Advances in Evolutionary and Deterministic Methods for Design, Optimiziation and Control in Engineering and Sciences}, booktitle = {Advances in Evolutionary and Deterministic Methods for Design, Optimiziation and Control in Engineering and Sciences}, editor = {Greiner, David and Galv{\`a}n, Blas and P{\`e}riaux, Jacques and Gauger, Nicolas R. and Giannakoglou, Kyriakos C. and Winter, Gabriel}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-11540-5}, doi = {10.1007/978-3-319-11541-2}, pages = {197 -- 208}, language = {en} } @misc{WurmBestle, author = {Wurm, Andreas and Bestle, Dieter}, title = {Robust design optimization for improving automotive shift quality}, series = {Optimization and Engineering}, volume = {17}, journal = {Optimization and Engineering}, number = {2}, issn = {1573-2924}, doi = {10.1007/s11081-015-9290-1}, pages = {421 -- 436}, language = {en} } @inproceedings{WehbiBestleKahlbau, author = {Wehbi, Kassem and Bestle, Dieter and Kahlbau, Sebastian}, title = {Multi-objective Launch Control Optimization for Automatic Clutch Engagement}, series = {Tagungsband, 6th International Conference on Experiments/Process/System Modeling/Simulation/ Optimization (6th IC-EpsMsO), Athen (Griechenland), 8.-11. Juli 2015}, booktitle = {Tagungsband, 6th International Conference on Experiments/Process/System Modeling/Simulation/ Optimization (6th IC-EpsMsO), Athen (Griechenland), 8.-11. Juli 2015}, publisher = {LFME}, address = {Athen}, isbn = {978-618-80527-8-9}, language = {en} } @inproceedings{UbbenBestleHaug, author = {Ubben, Paul Tobe and Bestle, Dieter and Haug, J{\"u}rgen}, title = {Robust Automotive Suspension Design Using Adaptive Response Surface Based Multi-objektive Optimization}, series = {11. Weimarer Optimierungs- und Stochastiktage - 06. - 07. November 2014}, booktitle = {11. Weimarer Optimierungs- und Stochastiktage - 06. - 07. November 2014}, publisher = {DYNARDO GmbH}, address = {Weimar}, pages = {19}, abstract = {Deterministic optimization is used in all fields of engineering, especially in early design processes based on digital prototypes and simulation. A major disadvantage of deterministic optimization is the unknown robustness of the found solution against uncertainties of system parameters. Therefore, the Robust Design Optimization (RDO) concept as combination of Robustness Analysis (RA) and deterministic optimization was developed. In this paper, such an approach is applied to the optimization of a suspension for passenger cars w.r.t. typical driving maneuvers. The suspension behavior has to be robust against uncertainties without defining strict limits or safety margins. The coupled multi-objective RDO procedure will find a Pareto-front w.r.t. mean value and variance of chosen objectives. As a result, a specific compromise regarding system robustness and mean performance may be chosen from this Pareto-set. To overcome the vast amount of CPU-time, required for expensive direct function evaluations, an adaptive response surface method (aRSM) is integrated. The overall process then consists of an inner loop involving a multi-objective evolutionary algorithm based on response surfaces and an outer loop, where metamodeling is performed on a set of support points. This set is initialized in the first iteration step and updated afterwards by picking promising designs from the Pareto-fronts of the surrogate model, which are then evaluated exactly.}, language = {en} } @misc{JankeBestleBecker, author = {Janke, Christian and Bestle, Dieter and Becker, Bernd}, title = {Compressor Map Computation Based on 3D CFD Analysis}, series = {CEAS Aeronautical Journal}, volume = {6}, journal = {CEAS Aeronautical Journal}, number = {4}, issn = {1869-5582}, doi = {10.1007/s13272-015-0159-y}, pages = {515 -- 527}, language = {en} } @misc{UbbenBestleHaug, author = {Ubben, Paul Tobe and Bestle, Dieter and Haug, J{\"u}rgen}, title = {Robust Automotive Suspension Design Using Adaptive Response Surface Based Multi-objektive Optimization}, series = {RDO-Journal}, journal = {RDO-Journal}, number = {2}, pages = {10 -- 15}, language = {en} } @inproceedings{HartwigBestle, author = {Hartwig, Lennard and Bestle, Dieter}, title = {Enhancing Low-Fidelity Compressor Design by Utilizing a Surrogate Model based on Higher-Fidelity Information}, series = {7th International Conference from "Scientific Computing to Computational Engineering", Athen, 6-9 July, 2016}, booktitle = {7th International Conference from "Scientific Computing to Computational Engineering", Athen, 6-9 July, 2016}, isbn = {978-618-80527-9-6}, language = {en} } @inproceedings{MartinBestle, author = {Martin, Ivo and Bestle, Dieter}, title = {Automated Mode Identification of Airfoil Geometries to be used in an Optimization Process}, series = {ASME Turbo Expo 2016, Turbomachinery Technical Conference and Exposition, Volume 7A, Structures and Dynamics, Seoul, South Korea, June 13-17, 2016}, booktitle = {ASME Turbo Expo 2016, Turbomachinery Technical Conference and Exposition, Volume 7A, Structures and Dynamics, Seoul, South Korea, June 13-17, 2016}, publisher = {ASME}, address = {New York, NY}, isbn = {978-0-7918-4983-5}, doi = {10.1115/GT2016-56987}, pages = {12}, language = {en} } @misc{RuiBestleZhangetal., author = {Rui, Xiaoting and Bestle, Dieter and Zhang, Jianshu and Zhou, Qinbo}, title = {A New Version of Transfer Matrix Method for multibody Systems}, series = {Multibody System Dynamics}, volume = {38}, journal = {Multibody System Dynamics}, number = {2}, issn = {1573-272X}, doi = {10.1007/s11044-016-9528-5}, pages = {137 -- 156}, language = {en} } @inproceedings{JankeGollerMartinetal., author = {Janke, Christian and Goller, M. and Martin, Ivo and Gaun, Lilia and Bestle, Dieter}, title = {3D-CFD Compressor Map Computation of a Multi-Stage Axial Compressor with Off-Design Adjusted Rotor Geometries}, series = {ASME Turbo Expo 2016, Turbomachinery Technical Conference and Exposition, Volume 7A, Structures and Dynamics, Seoul, South Korea, June 13-17, 2016}, booktitle = {ASME Turbo Expo 2016, Turbomachinery Technical Conference and Exposition, Volume 7A, Structures and Dynamics, Seoul, South Korea, June 13-17, 2016}, publisher = {ASME}, address = {New York, NY [u.a.]}, isbn = {978-0-7918-4983-5}, language = {en} } @inproceedings{UbbenHaugBestle, author = {Ubben, Paul Tobe and Haug, J. and Bestle, Dieter}, title = {Concept for Automated Automotive Chassis Architecture Design}, series = {7th International Munich Chassis Symposium 2016, 14.06.2016 - 15.06.2016, M{\"u}nchen}, booktitle = {7th International Munich Chassis Symposium 2016, 14.06.2016 - 15.06.2016, M{\"u}nchen}, publisher = {Springer Vieweg}, address = {Wiesbaden}, isbn = {978-3-658-14218-6}, pages = {348}, language = {en} } @misc{WehbiBestleBeilharz, author = {Wehbi, Kassem and Bestle, Dieter and Beilharz, J{\"o}rg}, title = {Automatic Calibration Process for Optimal Control of Clutch Engagement during Launch}, series = {Mechanics Based Design of Structures and Machines}, volume = {45}, journal = {Mechanics Based Design of Structures and Machines}, number = {4}, issn = {1539-7742}, doi = {10.1080/15397734.2016.1250221}, pages = {507 -- 522}, language = {en} } @misc{AbbasZhouBestleetal., author = {Abbas, Laith K. and Zhou, Qinbo and Bestle, Dieter and Rui, Xiaoting}, title = {A Unified Approach for Treating Multibody Systems Involving Flexible Beams}, series = {Mechanism and Machine Theory}, volume = {107}, journal = {Mechanism and Machine Theory}, issn = {0094-114X}, doi = {10.1016/j.mechmachtheory.2016.09.022}, pages = {197 -- 209}, language = {en} } @inproceedings{HartwigBestle, author = {Hartwig, Lennard and Bestle, Dieter}, title = {Compressor Blade Design for Stationary Gas Turbines Using Dimension Reduced Surrogate Modeling}, series = {IEEE Congress on Evolutionary Computation, 5.-8.6.2017, Donostia/San Sebasti{\´a}n, Spain}, booktitle = {IEEE Congress on Evolutionary Computation, 5.-8.6.2017, Donostia/San Sebasti{\´a}n, Spain}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5090-4601-0}, doi = {10.1109/CEC.2017.7969493}, pages = {1595 -- 1602}, language = {en} } @inproceedings{HendlerExtraLockanetal., author = {Hendler, Marco and Extra, Simon and Lockan, Michael and Bestle, Dieter and Flassig, Peter Michael}, title = {Compressor Design in the Context of Holistic Aero Engine Design}, series = {2017 AIAA Aviation Forum, Denver, AIAA-2017-3334, 2017}, booktitle = {2017 AIAA Aviation Forum, Denver, AIAA-2017-3334, 2017}, doi = {10.2514/6.2017-3334}, language = {en} } @inproceedings{LockanBestleJankeetal., author = {Lockan, Michael and Bestle, Dieter and Janke, Christian and Meyer, Marcus}, title = {Optimization of Coupled System Components Using Approximations of Interface Quantities}, series = {ASME Turbo Expo 2017, Turbomachinery Conference and Exposition, Volume 2C, Turbomachinery Charlotte, North Carolina, USA, June 26-30, 2017}, booktitle = {ASME Turbo Expo 2017, Turbomachinery Conference and Exposition, Volume 2C, Turbomachinery Charlotte, North Carolina, USA, June 26-30, 2017}, publisher = {ASME}, address = {New York, NY}, isbn = {978-0-7918-5080-0}, doi = {10.1115/GT2017-64135}, pages = {11}, language = {en} } @misc{MartinBestle, author = {Martin, Ivo and Bestle, Dieter}, title = {Automated eigenmode classification for airfoils in the presence of fixation uncertainties}, series = {Engineering Applications of Artificial Intelligence}, volume = {67}, journal = {Engineering Applications of Artificial Intelligence}, issn = {0952-1976}, doi = {https://doi.org/10.1016/j.engappai.2017.09.022}, pages = {187 -- 196}, abstract = {Abstract Automated structural design optimization should take into acc ount risk of failure which depends on eigenmodes, since eigenmode shap es determine failure risk by their characteristic stress concentration pattern, as well as by their specific interaction with excitations. T hus, such a process needs to be able to identify eigenmodes with low e rror rate. This is a rather challenging task, because eigenmodes depen d on the geometry of the structure which is changing during the design process, and on boundary conditions which are not clearly defined due to uncertainties in the assembly and running conditions. The present investigation aims to find a proper classification method for eigenmod es of compressor airfoils. Specific data normalization and data depend ent initialization of a neural network using principle-component direc tions as initial weight vectors have led to the development of a class ification and decision procedure enabling automatic assignment of prop er uncertainty bands to eigenfrequencies of a specific eigenmode shape . Application to compressor airfoils of a stationary gas-turbine with hammer-foot and dove-tail roots demonstrates the high performance of t he proposed procedure.}, language = {en} } @misc{HofmannBrennerBestle, author = {Hofmann, Timo and Brenner, Tobias and Bestle, Dieter}, title = {Investigation of the Disc Deflection Behavior of Shim Valves in Vehicle Shock Absorbers}, series = {SAE technical papers}, journal = {SAE technical papers}, number = {2018-01-0701}, issn = {0148-7191}, pages = {11}, language = {en} } @inproceedings{WehbiWurmBestleetal., author = {Wehbi, Kassem and Wurm, Andreas and Bestle, Dieter and Beilharz, J{\"o}rg}, title = {Automated Calibration Using Simulation and Robust Design Optimization Improving Shift and Launch Quality of Automatic Transmissions}, series = {Automotive data analytics, methods, DoE, proceedings of the International Calibration Conference}, booktitle = {Automotive data analytics, methods, DoE, proceedings of the International Calibration Conference}, editor = {R{\"o}pke, Karsten and G{\"u}hmann, Clemens}, publisher = {Expert Verlag}, address = {Renningen}, isbn = {978-3-8169-3381-6}, pages = {18 -- 33}, language = {en} } @techreport{BestleLockanHartwigetal., author = {Bestle, Dieter and Lockan, Michael and Hartwig, Lennard and Martin, Ivo}, title = {Q3D Optimierung vielstufiger Verdichter in der Vorauslegung und robuste multidisziplin{\"a}re Schaufelauslegung}, publisher = {Brandenburgische Technische Universit{\"a}t Cottbus-Senftenberg, IKMZ-Universit{\"a}tsbibliothek}, address = {Cottbus ; Senftenberg}, isbn = {978-3-940471-30-7}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-42225}, pages = {33}, language = {de} } @misc{BrennerHofmannRiegeretal., author = {Brenner, Tobias and Hofmann, Timo and Rieger, Karl-Josef and Bestle, Dieter}, title = {Untersuchung des Ger{\"a}uschverhaltens von Kraftfahrzeug-Schwingungsd{\"a}mpfern und Elastomerlagern}, series = {16. Internationale VDI-Tagung Reifen-Fahrwerk-Fahrbahn 2017}, journal = {16. Internationale VDI-Tagung Reifen-Fahrwerk-Fahrbahn 2017}, publisher = {VDI Verlag}, address = {D{\"u}sseldorf}, isbn = {978-3-18-092296-6}, pages = {187 -- 198}, language = {de} } @inproceedings{HendlerBestleFlassig, author = {Hendler, Marco and Bestle, Dieter and Flassig, Peter Michael}, title = {Cloning Strategy for Aerodynamic Compressor Design based on Throughflow Analysis}, series = {Proceedings of Montreal 2018, Global Power and Propulsion Forum, 7-9.05.2018}, booktitle = {Proceedings of Montreal 2018, Global Power and Propulsion Forum, 7-9.05.2018}, pages = {8}, abstract = {Due to their high complexity, aero engine development is a time-consuming and cost-intensive process. Therefore, pre-developed proven aerodynamic and geometric compressor information is often used as starting point and transferred to new compressor designs. In the present paper, a new approach for aerodynamic cloning of an already existing compressor flow to a new compressor geometry by use of a streamline curvature based Throughflow solver is presented. Parameterized compressor quantities are automatically modified with the help of optimization strategies, and the resulting compressor aerodynamics are compared to a reference design in each iteration step. The target is to minimize the discrepancy between reference design and new design regarding essential flow parameters like de Haller number, Mach number etc., and thereby to reproduce the aerodynamic image of the reference design. Thus, already collected experience from existing compressor flow fields can be used to reduce costs for developing as well as testing of new compressor configurations. Conducted investigations show a notable acceleration of the design process in comparison to former strategies starting from scratch while achieving an acceptable compliance of aerodynamic parameters.}, language = {en} } @inproceedings{ExtraLockanBestleetal., author = {Extra, Simon and Lockan, Michael and Bestle, Dieter and Flassig, Peter Michael}, title = {A Comparison of Strategies for Efficient Core Engine Optimization with Coupled Subsystems}, series = {Proceedings of Montreal 2018, Global Power and Propulsion Forum, 7-9.05.2018}, booktitle = {Proceedings of Montreal 2018, Global Power and Propulsion Forum, 7-9.05.2018}, pages = {8}, abstract = {The present paper compares four different optimization strategies for decoupled optimization in the context of preliminary core engine design for aero engines. An optimization with the AAO (All-At-Once) approach is performed as a baseline and compared against the performance and results of three cascaded optimization strategies: CO (Collaborative Optimization), BLISS 2000 (Bi-Level Integrated System Synthesis) and ISOC (Interface Segmentation Optimization Concept). The optimization problem is based on a thermodynamic core engine model representing an industrial application example. The results are assessed with respect to typical requirements for multidisciplinary core engine design. The impact of the used optimization strategy on the performance of the optimization concept is investigated and discussed.}, language = {en} } @inproceedings{UrbanoGolowinLoehnertetal., author = {Urbano, Jose and Golowin, Andrej and L{\"o}hnert, Stefan and Bestle, Dieter}, title = {Mechanical Integrity of Steel Discs with Corrosion Pits}, series = {12th International Fatigue Congress (FATIGUE 2018), Poitiers Futuroscope, France, May 27-June 1st, 2018}, booktitle = {12th International Fatigue Congress (FATIGUE 2018), Poitiers Futuroscope, France, May 27-June 1st, 2018}, publisher = {EDP Sciences}, address = {Les Ulis}, doi = {10.1051/matecconf/201816504012}, pages = {8}, abstract = {Currently, prediction of crack initiation by corrosion pits is only possible by assuming regular geometrical shapes, such as semi-spheres or semi-ellipsoids. Moreover, typical fatigue life diagrams associate the crack initiation life with geometrical features, such as pit depth or aspect ratio, often leading to unsatisfactory correlations due to high pit shape variability and data scatter. In the context of blade-disc fixation in aero engine turbines, this limitation translates into highly conservative life estimations. Therefore, a new crack initiation predictor is formulated based on experimental testing and numerical analysis of 28 artificial corrosion pits. A low-cycle fatigue test campaign is conducted using three-point bending test specimens to simulate maximum takeoff operation conditions of the aero engine and the associated loading of the blade root designed as firtree. An artificial pit is located at the critical point of each test specimen, respectively. The prediction criterion is based on finite element analysis and is formulated as the lowest plastic strain of a plastic region with a certain volume in the corrosion pit. This reference volume is varied until an optimum correlation with experimental crack initiation life is obtained. The criterion shows a superior correlation with crack initiation life compared to pure geometrical parameters such as pit depth.}, language = {en} } @inproceedings{ExtraLockanBestleetal., author = {Extra, Simon and Lockan, Michael and Bestle, Dieter and Flassig, Peter Michael}, title = {Coupled Subsystem Optimization for Preliminary Core Engine Design}, series = {Evolutionary and deterministic methods for design optimization and control with applications to industrial and societal problems, Sep. 13-15, 2017 in Madrid, Spain, EUROGEN 2017, Book of abstracts}, booktitle = {Evolutionary and deterministic methods for design optimization and control with applications to industrial and societal problems, Sep. 13-15, 2017 in Madrid, Spain, EUROGEN 2017, Book of abstracts}, publisher = {Technical University}, address = {Madrid}, isbn = {978-84-697-5112-1}, language = {en} } @inproceedings{ChaoBestleKruegeretal., author = {Chao, Chen-Xiang and Bestle, Dieter and Kr{\"u}ger, D. and Meissner, Bernd}, title = {Increasing the tooth root capacity of symmetric and asymmetric gears by optimizing the tooth root fillet shape}, series = {International Gear Conference 2018, Lyon, 27.-29.08.2018, vol. 1}, booktitle = {International Gear Conference 2018, Lyon, 27.-29.08.2018, vol. 1}, publisher = {Chartridge Books Oxford}, address = {Oxford}, isbn = {978-1-911033-42-4}, pages = {531 -- 541}, abstract = {The international standard ISO 6336-3 defines a calculation method for the tooth root capacity of standard gears with basic rack profile according to ISO 53. However, the results of this method may become too optimistic for non-standard gears with custom root fillets, large pressure angles or asymmetric teeth, since the effect of general mean stresses on the local tooth root strength are neglected. Therefore, a more generic calculation method is suggested, which considers the mean stress influence by utilizing the Haigh diagram. Both approaches are then used as basis of root fillet shape optimizations. A comparison of results demonstrates significant differences in the safety assessment and the resulting root geometry.}, language = {en} } @inproceedings{BrennerHofmannHupfeldetal., author = {Brenner, Tobias and Hofmann, Timo and Hupfeld, J. and Bestle, Dieter}, title = {Process for Early Prediction of Noise Induced by Damper Struts}, series = {18. Internationales Stuttgarter Symposium : Automobil- und Motorentechnik}, booktitle = {18. Internationales Stuttgarter Symposium : Automobil- und Motorentechnik}, editor = {Bargende, Michael and Reuss, Hans-Christian and Wiedemann, Jochen}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, isbn = {978-3-658-21193-6}, doi = {10.1007/978-3-658-21194-3_54}, pages = {699 -- 713}, language = {en} } @inproceedings{HofmannBrennerHupfeldetal., author = {Hofmann, Timo and Brenner, Tobias and Hupfeld, J. and Bestle, Dieter}, title = {Generation of Optimal Shim Stacks for Valves in Automotive Dampers}, series = {18. Internationales Stuttgarter Symposium : Automobil- und Motorentechnik}, booktitle = {18. Internationales Stuttgarter Symposium : Automobil- und Motorentechnik}, editor = {Bargende, Michael and Reuss, Hans-Christian and Wiedemann, Jochen}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, isbn = {978-3-658-21193-6}, doi = {10.1007/978-3-658-21194-3_56}, pages = {729 -- 743}, language = {en} } @misc{HendlerBestleFlassig, author = {Hendler, Marco and Bestle, Dieter and Flassig, Peter Michael}, title = {Component-specific Engine Design Taking into Account Holistic Design Aspects}, series = {International Journal of Turbomachinery, Propulsion and Power}, volume = {3}, journal = {International Journal of Turbomachinery, Propulsion and Power}, number = {2}, issn = {2504-186X}, doi = {10.3390/ijtpp3020012}, pages = {1 -- 16}, language = {en} } @misc{IvanovBestleJanke, author = {Ivanov, Dmitrij and Bestle, Dieter and Janke, Christian}, title = {A Response Surface Based Strategy for Accelerated Compressor Map Computation}, series = {Evolutionary and deterministic methods for design optimization and control with applications to industrial and societal problems, Sep. 13-15, 2017 in Madrid, Spain, EUROGEN 2017, Book of abstracts}, journal = {Evolutionary and deterministic methods for design optimization and control with applications to industrial and societal problems, Sep. 13-15, 2017 in Madrid, Spain, EUROGEN 2017, Book of abstracts}, publisher = {Technical University}, address = {Madrid}, isbn = {978-84-697-5112-1}, language = {en} } @inproceedings{IvanovBestleJanke, author = {Ivanov, Dmitrij and Bestle, Dieter and Janke, Christian}, title = {A Response Surface Based Strategy for Accelerated Compressor Map Computation}, series = {Evolutionary and Deterministic Methods for Design Optimization and Control With Applications to Industrial and Societal Problems}, booktitle = {Evolutionary and Deterministic Methods for Design Optimization and Control With Applications to Industrial and Societal Problems}, editor = {Andr{\`e}s-P{\`e}rez, Esther and Gonz{\´a}lez, Leo M. and Periaux, Jacques and Gauger, Nicolas R. and Quagliarella, Domenico and Giannakoglou, Kyriakos C.}, publisher = {Springer International Publishing}, address = {Cham}, isbn = {978-3-319-89889-6}, doi = {10.1007/978-3-319-89890-2_14}, pages = {211 -- 226}, language = {en} } @inproceedings{ExtraLockanBestleetal., author = {Extra, Simon and Lockan, Michael and Bestle, Dieter and Flassig, Peter Michael}, title = {Coupled Subsystem Optimiziation for Preliminary Core Engine Design}, series = {Evolutionary and Deterministic Methods for Design Optimization and Control With Applications to Industrial and Societal Problems}, booktitle = {Evolutionary and Deterministic Methods for Design Optimization and Control With Applications to Industrial and Societal Problems}, editor = {Andr{\`e}s-P{\`e}rez, Esther and Gonz{\´a}lez, Leo M. and Periaux, Jacques and Gauger, Nicolas R. and Quagliarella, Domenico and Giannakoglou, Kyriakos C.}, publisher = {Springer International Publishing}, address = {Cham}, isbn = {978-3-319-89889-6}, doi = {10.1007/978-3-319-89890-2_33}, pages = {513 -- 527}, language = {en} } @inproceedings{BestleWehbi, author = {Bestle, Dieter and Wehbi, Kassem}, title = {Optimal Launch of Vehicles with Automated Transmission}, series = {4th Joint International Conference on Multibody System Dynamics, Montreal 2016}, booktitle = {4th Joint International Conference on Multibody System Dynamics, Montreal 2016}, publisher = {McGill University}, address = {Montreal}, isbn = {978-0-9682827-9-3}, language = {en} } @inproceedings{SunXueBestleetal., author = {Sun, Lu and Xue, Rui and Bestle, Dieter and Wang, Guoping and Zhang, Jianshu and Rui, Xiaoting}, title = {Vibration Analysis of Linear Beam with Moving Loads Based on Riccati Transfer Matrix Method for Multibody Systems}, series = {14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control - Quebec City, Quebec, Canada, August 26-29, 2018}, booktitle = {14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control - Quebec City, Quebec, Canada, August 26-29, 2018}, publisher = {ASME}, address = {New York}, isbn = {978-0-7918-5183-8}, pages = {10}, language = {en} } @inproceedings{XueSunBestleetal., author = {Xue, Rui and Sun, Lu and Bestle, Dieter and Wang, Guoping and Chen, Dongyang and Rui, Xiaoting}, title = {Vortex-induced Vibration Analysis of a composite Riser System Based on the Transfer Matrix Method}, series = {14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control - Quebec City, Quebec, Canada, August 26-29, 2018}, booktitle = {14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control - Quebec City, Quebec, Canada, August 26-29, 2018}, publisher = {ASME}, address = {New York}, isbn = {978-0-7918-5183-8}, pages = {10}, language = {en} } @inproceedings{IvanovBestleJanke, author = {Ivanov, Dmitrij and Bestle, Dieter and Janke, Christian}, title = {Fast Compressor Map Computation by Utilizing Support Vector Machine and Response Surface Approximation}, series = {IEEE World Congress on Computational Intelligence, Rio de Janeiro, 8.-13.07.18}, booktitle = {IEEE World Congress on Computational Intelligence, Rio de Janeiro, 8.-13.07.18}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5090-6014-6}, pages = {8}, language = {en} } @misc{IvanovBestleJanke, author = {Ivanov, Dmitrij and Bestle, Dieter and Janke, Christian}, title = {Unstrukturierte Berechnung von Verdichterkennfeldern mithilfe von SVM und Antwortfl{\"a}chen}, series = {Luft- und Raumfahrt - Digitalisierung und Vernetzung, Deutscher Luft- und Raumfahrtkongress 2018, 04.-06. September 2018, Friedrichshafen, Graf-Zeppelin-Haus}, journal = {Luft- und Raumfahrt - Digitalisierung und Vernetzung, Deutscher Luft- und Raumfahrtkongress 2018, 04.-06. September 2018, Friedrichshafen, Graf-Zeppelin-Haus}, publisher = {Deutsche Gesellschaft f{\"u}r Luft- und Raumfahrt - Lilienthal-Oberth e.V.}, address = {Bonn}, doi = {10.25967/480078}, url = {http://nbn-resolving.de/urn:nbn:de:101:1-2020011711430160129914}, pages = {10}, language = {de} } @misc{ExtraHendlerBestleetal., author = {Extra, Simon and Hendler, Marco and Bestle, Dieter and Flassig, Peter Michael}, title = {Verbesserte Vorauslegung des Kerntriebwerks mithilfe eines kaskadierten Optimierungsprozesses}, series = {Luft- und Raumfahrt - Digitalisierung und Vernetzung, Deutscher Luft- und Raumfahrtkongress 2018, 04.-06. September 2018, Friedrichshafen, Graf-Zeppelin-Haus}, journal = {Luft- und Raumfahrt - Digitalisierung und Vernetzung, Deutscher Luft- und Raumfahrtkongress 2018, 04.-06. September 2018, Friedrichshafen, Graf-Zeppelin-Haus}, publisher = {Deutsche Gesellschaft f{\"u}r Luft- und Raumfahrt - Lilienthal-Oberth e.V.}, address = {Bonn}, doi = {10.25967/480163}, url = {http://nbn-resolving.de/urn:nbn:de:101:1-2020011711475557798029}, pages = {10}, language = {de} } @inproceedings{KuslitsBestle, author = {Kuslits, M{\´a}rton and Bestle, Dieter}, title = {Symbolic Linearized Equations for Nonholonomic Multibody Systems with Closed-loop Kinematics}, series = {14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control - Quebec City, Quebec, Canada, August 26-29, 2018}, booktitle = {14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control - Quebec City, Quebec, Canada, August 26-29, 2018}, publisher = {ASME}, address = {New York}, isbn = {978-0-7918-5183-8}, pages = {10}, language = {en} } @misc{UrbanoBestleGerstbergeretal., author = {Urbano, Jos{\`e} and Bestle, Dieter and Gerstberger, Ulf and Flassig, Peter Michael}, title = {Low-Order Representation of Manufacturing Variations Based on B-Spline Morphing}, series = {ASME 2019 International Mechanical Engineering Congress and Exposition, November 11-14, 2019 Salt Lake City, Utah, USA}, journal = {ASME 2019 International Mechanical Engineering Congress and Exposition, November 11-14, 2019 Salt Lake City, Utah, USA}, publisher = {American Society of Mechanical Engineers}, isbn = {978-0-7918-5938-4}, doi = {10.1115/IMECE2019-10294}, language = {en} } @misc{ChaoBestleKrueger, author = {Chao, Chen-Xiang and Bestle, Dieter and Kr{\"u}ger, David}, title = {Tooth Root Shape Optimization of Thin-Rimmed Planet Gears}, series = {Proceedings of ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Volume 10: 2019 International Power Transmission and Gearing Conference}, journal = {Proceedings of ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Volume 10: 2019 International Power Transmission and Gearing Conference}, isbn = {978-0-7918-5930-8}, doi = {10.1115/DETC2019-97345}, pages = {10}, abstract = {Planetary gearboxes in highly sophisticated applications such as turbofan engines are required to have a high power-to-weight ratio and excellent reliability. Hence, thin-rimmed gear units need to be designed as compact as possible which, however, is usually limited by the tooth root load capacity. In order to come up with the best design, a tooth root shape optimization process is developed for thin-rimmed planet gears.}, language = {en} } @misc{BergoldBrandesSeufertetal., author = {Bergold, Markus and Brandes, S. and Seufert, B. and Bestle, Dieter}, title = {Simulation von Kundenman{\"o}vern zur Ermittlung repr{\"a}sentativer Fahrwerksbelastungen}, series = {Lastannahmen und Anforderungsmanagement in der Betriebsfestigkeit : neue Trends : 46. Tagung des Arbeitskreises Betriebsfestigkeit, 09. und 10. Oktober 2019 in Wolfsburg}, journal = {Lastannahmen und Anforderungsmanagement in der Betriebsfestigkeit : neue Trends : 46. Tagung des Arbeitskreises Betriebsfestigkeit, 09. und 10. Oktober 2019 in Wolfsburg}, publisher = {DVM, Deutscher Verband f{\"u}r Materialforschung und -pr{\"u}fung e.V.}, address = {Berlin}, pages = {99 -- 114}, language = {de} } @misc{ChaoBestleKrueger, author = {Chao, Chen-Xiang and Bestle, Dieter and Kr{\"u}ger, David}, title = {Isight Process for Optimizing Tooth Roots in a High-Performance Gearbox}, series = {3DExperience Conference Germany 2019At: Darmstadt, Germany}, journal = {3DExperience Conference Germany 2019At: Darmstadt, Germany}, address = {Darmstadt}, language = {en} } @misc{MartinHartwigBestle, author = {Martin, Ivo and Hartwig, Lennard and Bestle, Dieter}, title = {A multi-objective optimization framework for robust axial compressor airfoil design}, series = {Structural and Multidisciplinary Optimization}, volume = {59}, journal = {Structural and Multidisciplinary Optimization}, number = {6}, issn = {1615-1488}, doi = {10.1007/s00158-018-2164-3}, pages = {1935 -- 1947}, language = {en} } @misc{KuslitsBestle, author = {Kuslits, M{\´a}rton and Bestle, Dieter}, title = {Modeling and Control of a New Differential Steering Concep}, series = {Vehicle System Dynamics}, volume = {57}, journal = {Vehicle System Dynamics}, number = {4}, issn = {1744-5159}, doi = {10.1080/00423114.2018.1473616}, pages = {520 -- 542}, language = {en} } @misc{ChaoBestleKruegeretal., author = {Chao, Chen-Xiang and Bestle, Dieter and Kr{\"u}ger, David and Meissner, Bernd}, title = {Zahnfußtragf{\"a}higkeitsoptimierung von Stirnr{\"a}dern f{\"u}r den Einsatz in Hochleistungsgetrieben mithilfe von Isight}, series = {Tagungsband Simulia Anwenderkonferenz, DASSAULT SYST{\`E}MES User Conference, Hanau, 4.-6. Dezember 2018}, journal = {Tagungsband Simulia Anwenderkonferenz, DASSAULT SYST{\`E}MES User Conference, Hanau, 4.-6. Dezember 2018}, address = {Hanau}, pages = {12}, language = {de} } @misc{KuslitsBestle, author = {Kuslits, M{\´a}rton and Bestle, Dieter}, title = {Control Design and Performance Evaluation of a New Steering Concept Based on a Custom Multibody Vehicle Model}, series = {5th Internationa Conference on Dynamic Simulation in Vehicle Engineering}, journal = {5th Internationa Conference on Dynamic Simulation in Vehicle Engineering}, address = {Steyr}, pages = {19 -- 34}, language = {en} } @misc{XueBestleWangetal., author = {Xue, Rui and Bestle, Dieter and Wang, Guoping and Zhang, Jiangshu and Rui, Xiaoting and He, Bin}, title = {A New Version of the Riccati Transfer matrix Method for Multibody systems Consisting of Chain and Branch Bodies}, series = {Multibody System Dynamics}, volume = {49}, journal = {Multibody System Dynamics}, number = {3}, issn = {1573-272X}, doi = {10.1007/s11044-019-09711-2}, pages = {337 -- 354}, language = {en} } @misc{KuslitsBestle, author = {Kuslits, M{\´a}rton and Bestle, Dieter}, title = {Multiobjective Performance Optimisation of a New Differential Steering Concept}, series = {Vehicle System Daynamics}, journal = {Vehicle System Daynamics}, issn = {0042-3114}, doi = {10.1080/00423114.2020.1804598}, pages = {23}, language = {en} } @techreport{Bestle, author = {Bestle, Dieter}, title = {Verbesserter Systementwurf durch KI-Methoden}, series = {3. VDI-Fachtagung Schwingungen 2021 : W{\"u}rzburg, 16. und 17. November 2021}, journal = {3. VDI-Fachtagung Schwingungen 2021 : W{\"u}rzburg, 16. und 17. November 2021}, publisher = {VDI-Verlag}, address = {W{\"u}rzburg}, isbn = {978-3-18-092391-8}, pages = {14}, language = {de} } @misc{Bestle, author = {Bestle, Dieter}, title = {Eigenvalue Sensitivity Analysis based on the Transfer Matrix Method}, series = {International journal of mechanical system dynamics : IJMSD}, volume = {1}, journal = {International journal of mechanical system dynamics : IJMSD}, number = {1}, issn = {2767-1402}, doi = {10.1002/msd2.12016}, pages = {96 -- 107}, language = {en} } @misc{RuiBestle, author = {Rui, Xue and Bestle, Dieter}, title = {Reduced Multibody System Transfer Matrix Method Using Decoupled Hinge Equations}, series = {International journal of mechanical system dynamics : IJMSD}, volume = {1}, journal = {International journal of mechanical system dynamics : IJMSD}, number = {2}, issn = {2767-1402}, doi = {10.1002/msd2.12026}, pages = {182 -- 193}, language = {en} } @misc{ZhouFehrBestleetal., author = {Zhou, Qinbo and Fehr, J{\"o}rg and Bestle, Dieter and Rui, Xiaoting}, title = {Simulation of Elastic Body Dynamics with Large Motion Using Transfer Matrix Method}, series = {Multibody System Dynamics}, volume = {59 (2023)}, journal = {Multibody System Dynamics}, number = {3}, issn = {1573-272X}, doi = {10.1007/s11044-022-09869-2}, pages = {269 -- 292}, language = {en} } @misc{dePayrebruneFlasskampStroehlaetal., author = {de Payrebrune, Kristin and Flaßkamp, Kathrin and Str{\"o}hla, Tom and Sattel, Thomas and Bestle, Dieter and al, et}, title = {The impact of Al on engineering design procedures for dynamical systems}, series = {Electrical Engineering and Systems Science. Systems and Control}, journal = {Electrical Engineering and Systems Science. Systems and Control}, publisher = {Cornell University}, doi = {10.48550/arXiv.2412.12230}, pages = {23}, language = {en} } @misc{ZhaiBestle, author = {Zhai, Tianyu and Bestle, Dieter}, title = {Design of two coupled fuzzy controllers for a planar direct internat reforming solid oxide fuel cell}, series = {Proceedings in Applied Mathematics and Mechanics}, volume = {24}, journal = {Proceedings in Applied Mathematics and Mechanics}, number = {4}, publisher = {Wiley-VCH GmbH}, doi = {10.1002/pamm.202400077}, language = {en} } @incollection{Bestle, author = {Bestle, Dieter}, title = {Optimization processes for automated design of industrial systems}, series = {Optimal design and control of multibody systems : proceedings of the IUTAM symposium}, booktitle = {Optimal design and control of multibody systems : proceedings of the IUTAM symposium}, editor = {Nachbagauer, Karin and Held, Alexander}, publisher = {Springer}, address = {Hamburg}, isbn = {978-3-031-49999-9}, issn = {1875-3507}, doi = {10.1007/978-3-031-50000-8_1}, pages = {3 -- 15}, language = {en} } @misc{KayatasBestle, author = {Kayatas, Zafer and Bestle, Dieter}, title = {Scenario identification and classification to support the assessment of advanced driver assistance systems}, series = {Applied Mechanics}, volume = {5}, journal = {Applied Mechanics}, number = {3}, publisher = {MDPI}, issn = {2673-3161}, doi = {10.3390/applmech5030032}, pages = {563 -- 578}, abstract = {In recent years, driver assistance systems in cars, buses, and trucks have become more common and powerful. In particular, the introduction of AI methods to sensors, signal fusion, and traffic recognition allows us to step forward from actual level-2 assistance to level-3 A dvanced D river A ssistance S ystems (ADAS), where driving becomes autonomous and responsibility shifts from the driver to the automobile manufacturers. This, however, requires a high-precision risk assessment of failure, which can only be achieved by extensive data acquisition and statistical analysis of real traffic scenarios (which is impossible to perform by humans). Therefore, critical driving situations have to be identified and classified automatically. This paper develops and compares two different strategies—a traditional rule-based approach derived from deterministic causal considerations, and an AI-based approach trained with idealized cut-in, cut-out, and cut-through maneuvers. Application to a 10-h measurement sequence on a German highway demonstrates that the latter has the higher performance, whereas the former misses some of the safety-relevant events to be identified.}, language = {en} } @misc{BielitzBestle, author = {Bielitz, Timo and Bestle, Dieter}, title = {Artificial recurrent model for parameter identification of dynamic systems}, series = {Proceedings in Applied Mathematics \& Mechanics}, journal = {Proceedings in Applied Mathematics \& Mechanics}, publisher = {Wiley-VCH GmbH}, issn = {1617-7061}, doi = {10.1002/pamm.202400015}, pages = {9}, language = {en} } @misc{BestleBielitz, author = {Bestle, Dieter and Bielitz, Timo}, title = {Real-time models for systems with costly or unknown dynamics}, series = {Special Issue: 94th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM)}, volume = {24}, journal = {Special Issue: 94th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM)}, number = {2}, issn = {1617-7061}, doi = {10.1002/pamm.202400008}, pages = {8}, abstract = {Many applications require real-time simulation where the computer model can be executed at least as fast as the underlying physical system. However, as the complexity of models grows, for example, in case of flexible multibody dynamics accounting for body elasticity, this becomes harder even with high-end computers and parallel computing. Further the modeling itself could be too cumbersome to come up with causal models, especially in industrial applications, or modeling is inhibited by unknown physical effects. In such cases, data-based modeling with AI-strategies may be an alternative to come up with real-time capable simulation models. Based on measured or costly simulated trajectories, state function values of the dynamic system are first identified from divided differences of subsequent states, and then used for training a feedforward neural network. This can then be used as an approximate surrogate for further simulations or as part of a real-time application. Applications to the Duffing equation and a closed-loop mechanism demonstrate high conformity of predicted and directly simulated trajectories reproducing even the bifurcation behavior of the Duffing equation.}, language = {en} } @misc{BielitzBestle, author = {Bielitz, Timo and Bestle, Dieter}, title = {Identification of dynamic systems assisted by an autoregressive recurrent model}, series = {Proceedings in Applied Mathematics \& Mechanics : PAMM}, volume = {23}, journal = {Proceedings in Applied Mathematics \& Mechanics : PAMM}, number = {2}, issn = {1617-7061}, doi = {10.1002/pamm.202300086}, pages = {8}, abstract = {The identification of parameters in dynamic systems usually first requires modeling the system as nonlinear differential equations based on physical principles, which then can be evaluated to search for a set of optimal parameters that enable the mathematical model to reproduce some desired behavior of the real system. To overcome the necessity of complex modeling and to possibly reduce the number of extensive experimental evaluations of the real system or numerical evaluations of the differential equations, strategies from machine learning may be applied. The proposed method uses recurrent architectures such as Long Short-Term Memory (LSTM) networks as core to predict the system development from initial conditions and parameter values. The trainable weights of the model are optimized based on a set of training data containing parameter values and corresponding solution trajectories generated by evaluation of the system to be investigated. The trained model may then be used to identify unknown system parameter values related to a specific solution trajectory by solving an optimization problem for the inputs of the machine learning model.}, language = {en} } @misc{NiehoffBestleKupijai, author = {Niehoff, Malte and Bestle, Dieter and Kupijai, Philipp}, title = {Model-based design optimization taking into account design viability via classification}, series = {Engineering Modelling, Analysis and Simulation : the NAFEMS Journal}, volume = {1}, journal = {Engineering Modelling, Analysis and Simulation : the NAFEMS Journal}, number = {1}, publisher = {NAFEMS Ltd.}, address = {Knutsford}, issn = {3005-9763}, doi = {10.59972/c7b5hzx7}, pages = {1 -- 12}, language = {en} } @misc{MammenKayatasBestle, author = {Mammen, Manasa Mariam and Kayatas, Zafer and Bestle, Dieter}, title = {Evaluation of different generative models to support the validation of advanced driver assistance systems}, series = {Applied mechanics}, volume = {6}, journal = {Applied mechanics}, number = {2}, publisher = {MDPI}, address = {Basel}, issn = {2673-3161}, doi = {10.3390/applmech6020039}, pages = {1 -- 26}, abstract = {Validating the safety and reliability of automated driving systems is a critical challenge in the development of autonomous driving technology. Such systems must reliably replicate human driving behavior across scenarios of varying complexity and criticality. Ensuring this level of accuracy necessitates robust testing methodologies that can systematically assess performance under various driving conditions. Scenario-based testing addresses this challenge by recreating safety-critical situations at varying levels of abstraction, from simulations to real-world field tests. However, conventional parameterized models for scenario generation are often resource intensive, prone to bias from simplifications, and limited in capturing realistic vehicle trajectories. To overcome these limitations, the paper explores AI-based methods for scenario generation, with a focus on the cut-in maneuver. Four different approaches are trained and compared: Variational Autoencoder enhanced with a convolutional neural network (VAE), a basic Generative Adversarial Network (GAN), Wasserstein GAN (WGAN), and Time-Series GAN (TimeGAN). Their performance is assessed with respect to their ability to generate realistic and diverse trajectories for the cut-in scenario using qualitative analysis, quantitative metrics, and statistical analysis. Among the investigated approaches, VAE demonstrates superior performance, effectively generating realistic and diverse scenarios while maintaining computational efficiency.}, language = {en} } @misc{RoederHajipourEbeletal., author = {R{\"o}der, Benedict and Hajipour, Sanam and Ebel, Henrik and Eberhard, Peter and Bestle, Dieter}, title = {Automated design of a four-bar mechanism starting from hand drawings of desired coupler trajectories and velocity profiles}, series = {Mechanics based design of structures and machines}, volume = {2025}, journal = {Mechanics based design of structures and machines}, publisher = {Taylor \& Francis}, address = {Philadelphia, Pa.}, issn = {1539-7742}, doi = {10.1080/15397734.2025.2543559}, pages = {1 -- 25}, abstract = {When a specific, relatively simple motion must be executed with high precision and high speed, simple mechanisms like the four-bar linkage are often the first choice. Combined with control of the crank speed, these systems are able to move the end-effector with any changing speed. Designing a certain mechanism for a pre-defined trajectory, however, usually requires an expert, which is why automatic design by a design assistant system is desirable. Modern AI methods may support such an automatic design, which shall function only based on hand drawings of the desired path and a corresponding velocity profile. For a planar four-bar mechanism, which serves only as an example, this article proposes a general data-driven procedure where first the geometry of a mechanism is synthesized by machine learning such that the track point follows approximately the desired trajectory. Then, the kinematic relation between the track point's velocity profile and the crank's angular velocity is learned. This learned inverse kinematics model may be applied to an arbitrary user-defined velocity profile of the track point. Finally, a controller governing the crank torque is designed purely based on data to track the resulting angular crank velocity. Not every drawn motion can necessarily be realized with a mechanism; however, the goal is to identify a mechanism that approximates the drawn curve as accurately as possible. While various design toolboxes already exist, especially for the design of four-bar linkages, this article presents a design pipeline using data-driven approaches that solely learn from forward simulation data. This nurtures the hope that presented approach is also applicable to more complex systems where analytic formulations cannot be easily derived.}, language = {en} } @misc{HenkelBestleFlassigetal., author = {Henkel, Clara and Bestle, Dieter and Flassig, Peter and Janke, Christian and Slaby, Michael}, title = {Consideration of balancing within the fan-blisk design process}, series = {GPPS Shanghai25 Technical Paper Proceedings}, journal = {GPPS Shanghai25 Technical Paper Proceedings}, publisher = {Global Power and Propulsion Society (GPPS)}, address = {Zug, Schweiz}, doi = {10.33737/gpps25-tc-017}, pages = {1 -- 9}, abstract = {The design of fan-blisks is a multi-criterion optimisation challenge primarily involving the aerodynamic shape optimisation of blade profiles and subsequent blade balancing, i.e., shifting profiles in axial and circumferential directions to avoid stress hotspots. Although it is already known that blade balancing affects aerodynamic properties, this correlation is often not taken into account, which is why it is usually performed as an independent step after solving the aerodynamic design problem. However, this assumption is questionable because such shifts should be used to control both secondary flow effects and resulting stress. Therefore, the paper proposes problem formulations combining both aspects. Since optimisation requires costly numerical evaluations, machine learning methods are investigated to predict aerodynamic performance and stress constraints more efficiently. This enables a global optimisation process by reducing computational costs. Various different surrogate types are investigated, where stress constraints are formulated either as regression task predicting stress maxima, or as classification problem directly assessing design feasibility.}, language = {en} } @misc{BestleHajipour, author = {Bestle, Dieter and Hajipour, Sanam}, title = {Design of a tracking controller based on machine learning}, series = {International journal of mechanical system dynamics}, volume = {5 / 2025}, journal = {International journal of mechanical system dynamics}, number = {2}, publisher = {Wiley}, address = {Hoboken, NJ}, issn = {2767-1402}, doi = {10.1002/msd2.70006}, pages = {201 -- 211}, abstract = {Tracking control of multibody systems is a challenging task requiring detailed modeling and control expertise. Especially in the case of closed-loop mechanisms, inverse kinematics as part of the controller may become a game stopper due to the extensive calculations required for solving nonlinear equations and inverting complicated functions. The procedure introduced in this paper substitutes such advanced human expertise by artificial intelligence through the utilization of surrogates, which may be trained from data obtained by classical simulation. The necessary steps are demonstrated along a parallel mechanism called λ-robot. Based on its mechanical model, the workspace is investigated, which is required to set proper initial conditions for generating data covering the used operation space of the robot. Based on these data, artificial neural networks are trained as surrogates for inverse kinematics and inverse dynamics. They provide forward control information such that the remaining error behavior is governed by a linear ordinary differential equation, which allows applying a linear quadratic regulator (LQR) from linear control theory. An additional feedback loop of the tracking error accounts for model uncertainties. Simulation results validate the applicability of the proposed concept.}, language = {en} } @misc{MammenKayatasBestle, author = {Mammen, Manasa Mariam and Kayatas, Zafer and Bestle, Dieter}, title = {Generation of multiple types of driving scenarios with variational autoencoders for autonomous driving}, series = {Future transportation}, volume = {5}, journal = {Future transportation}, number = {4}, publisher = {MDPI}, address = {Basel}, issn = {673-7590}, doi = {10.3390/futuretransp5040159}, pages = {1 -- 20}, abstract = {Generating realistic and diverse driving scenarios is essential for effective scenario-based testing and validation in autonomous driving and the development of driver assistance systems. Traditionally, parametric models are used as standard approaches for scenario generation, but they require detailed domain expertise, suffer from scalability issues, and often introduce biases due to idealizations. Recent research has demonstrated that AI models can generate more realistic driving scenarios with reduced manual effort. However, these models typically focused on single scenario types, such as cut-in maneuvers, which limits their applicability to diverse real-world driving situations. This paper, therefore, proposes a unified generative framework that can simultaneously generate multiple types of driving scenarios, including cut-in, cut-out, and cut-through maneuvers from both directions, thus covering six distinct driving behaviors. The model not only learns to generate realistic trajectories but also reflects the same statistical properties as observed in real-world data, which is essential for risk assessment. Comprehensive evaluations, including quantitative metrics and visualizations from detailed latent and physical space analyses, demonstrate that the unified model achieves comparable performance to individually trained models. The shown approach reduces modeling complexity and offers a scalable solution for generating diverse, safety-relevant driving scenarios, supporting robust testing and validation.}, language = {en} } @misc{ZhaiBestle, author = {Zhai, Tianyu and Bestle, Dieter}, title = {Design of nonlinear model predictive control for planar direct internal reforming solid oxide fuel cell stacks}, series = {2025 44th Chinese Control Conference (CCC)}, journal = {2025 44th Chinese Control Conference (CCC)}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-988-75816-1-1}, doi = {10.23919/CCC64809.2025.11179672}, pages = {3093 -- 3098}, abstract = {The paper proposes an optimization-based nonlinear model predictive control (NMPC) strategy for the operation of a planar direct internal reforming solid oxide fuel cell (DIR-SOFC). The strategy focuses on regulating the inlet fuel and air flowrates to meet power demands, maintain the design temperature, and adhere to other operational constraints. A state estimator and optimizer are employed. Control and prediction horizons, as well as the time step lengths are carefully selected to balance estimation accuracy, stability, and computational cost. The obtained results demonstrate the effectiveness of NMPC in managing large-scale energy supply systems. Comparative analyses with varying tuning weights demonstrate the importance of appropriate weight selection regarding control performance and the robustness of NMPC. Both the dynamic modeling of the planar DIR-SOFC and the NMPC framework are implemented in the MATLAB/Simulink environment.}, language = {en} } @misc{HajipourZhaiBestle, author = {Hajipour, Sanam and Zhai, Tianyu and Bestle, Dieter}, title = {Data-driven sliding mode control of a rarallel 2D-robot}, series = {2025 8th International Conference on Intelligent Robotics and Control Engineering (IRCE)}, journal = {2025 8th International Conference on Intelligent Robotics and Control Engineering (IRCE)}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {979-8-3503-5710-3}, doi = {10.1109/irce66030.2025.11203089}, pages = {75 -- 80}, abstract = {The paper introduces an easy-to-implement control strategy for a parallel 2 D robot. To avoid any analytic computations of multibody system dynamics and kinematics of the closed-loop mechanism, two feedforward networks are utilized as surrogates for inverse models. The necessary data are generated using classical simulation starting from random initial conditions and applying random force to cover the full state space used during control. Closed-loop stability of the lambda robot is guaranteed by extending the forward control based on inverse dynamics by a sliding mode controller with super-twisting structure. This approach results in an error decay to very low magnitude orders as an investigation of the tracking performance demonstrating high efficiency and control accuracy even when the plant parameters are disturbed.}, language = {en} } @misc{HajipourBestle, author = {Hajipour, Sanam and Bestle, Dieter}, title = {Surrogate-based robust tracking controller for a Lambda robot}, series = {Applied mathematics and mechanics : special issue : 95th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM)}, volume = {25}, journal = {Applied mathematics and mechanics : special issue : 95th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM)}, number = {3}, publisher = {Wiley-VCH}, address = {Weinheim}, doi = {10.1002/pamm.70017}, pages = {1 -- 8}, abstract = {Tracking control of multibody systems typically requires precise inversion of complex kinematic and dynamic equations, which can be particularly challenging for closed-loop mechanisms. This study presents a surrogate-based control approach that leverages artificial neural networks to approximate inverse kinematics and dynamics using data generated from classical simulations of a nominal model. These data-driven surrogates enable feedforward prediction of joint trajectories and control inputs without requiring analytical model inversion. To ensure robustness under modeling errors and parametric uncertainties, additional inner- and outer-loop sliding mode control (SMC) loops are integrated. Simulation results from a lambda robot demonstrate high tracking accuracy with asymptotic steady-state errors even under perturbations of system parameters. The proposed framework establishes a structured approach for trajectory tracking by combining data-driven feedforward and robust feedback control suitable for complex nonlinear robotic systems.}, language = {en} }