TY - GEN A1 - Wehbi, Kassem A1 - Bestle, Dieter A1 - Beilharz, Jörg T1 - Automatic Calibration Process for Optimal Control of Clutch Engagement during Launch T2 - Mechanics Based Design of Structures and Machines Y1 - 2017 U6 - https://doi.org/10.1080/15397734.2016.1250221 SN - 1539-7742 VL - 45 IS - 4 SP - 507 EP - 522 ER - TY - GEN A1 - Abbas, Laith K. A1 - Zhou, Qinbo A1 - Bestle, Dieter A1 - Rui, Xiaoting T1 - A Unified Approach for Treating Multibody Systems Involving Flexible Beams T2 - Mechanism and Machine Theory Y1 - 2017 U6 - https://doi.org/10.1016/j.mechmachtheory.2016.09.022 SN - 0094-114X VL - 107 SP - 197 EP - 209 ER - TY - CHAP A1 - Hartwig, Lennard A1 - Bestle, Dieter T1 - Compressor Blade Design for Stationary Gas Turbines Using Dimension Reduced Surrogate Modeling T2 - IEEE Congress on Evolutionary Computation, 5.-8.6.2017, Donostia/San Sebastián, Spain KW - Compressor Blade Design KW - Surrogate Modelling KW - Coupled Optimization Y1 - 2017 SN - 978-1-5090-4601-0 SN - 978-1-5090-4602-7 U6 - https://doi.org/10.1109/CEC.2017.7969493 SP - 1595 EP - 1602 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Hendler, Marco A1 - Extra, Simon A1 - Lockan, Michael A1 - Bestle, Dieter A1 - Flassig, Peter Michael T1 - Compressor Design in the Context of Holistic Aero Engine Design T2 - 2017 AIAA Aviation Forum, Denver, AIAA-2017-3334, 2017 KW - Holistic Optimization KW - Aero Engines KW - Computational Fluid Dynamics Y1 - 2017 U6 - https://doi.org/10.2514/6.2017-3334 ER - TY - CHAP A1 - Lockan, Michael A1 - Bestle, Dieter A1 - Janke, Christian A1 - Meyer, Marcus T1 - Optimization of Coupled System Components Using Approximations of Interface Quantities T2 - ASME Turbo Expo 2017, Turbomachinery Conference and Exposition, Volume 2C, Turbomachinery Charlotte, North Carolina, USA, June 26-30, 2017 KW - Optimization KW - Approximation Y1 - 2017 SN - 978-0-7918-5080-0 U6 - https://doi.org/10.1115/GT2017-64135 N1 - GT2017-64135 PB - ASME CY - New York, NY ER - TY - GEN A1 - Martin, Ivo A1 - Bestle, Dieter T1 - Automated eigenmode classification for airfoils in the presence of fixation uncertainties T2 - Engineering Applications of Artificial Intelligence N2 - 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. KW - Principle-component analysis Y1 - 2018 UR - https://www.sciencedirect.com/science/article/pii/S0952197617302361 U6 - https://doi.org/https://doi.org/10.1016/j.engappai.2017.09.022 SN - 0952-1976 VL - 67 SP - 187 EP - 196 ER - TY - GEN A1 - Hofmann, Timo A1 - Brenner, Tobias A1 - Bestle, Dieter T1 - Investigation of the Disc Deflection Behavior of Shim Valves in Vehicle Shock Absorbers T2 - SAE technical papers Y1 - 2018 SN - 0148-7191 SN - 0096-5170 IS - 2018-01-0701 ER - TY - CHAP A1 - Wehbi, Kassem A1 - Wurm, Andreas A1 - Bestle, Dieter A1 - Beilharz, Jörg ED - Röpke, Karsten ED - Gühmann, Clemens T1 - Automated Calibration Using Simulation and Robust Design Optimization Improving Shift and Launch Quality of Automatic Transmissions T2 - Automotive data analytics, methods, DoE, proceedings of the International Calibration Conference Y1 - 2017 SN - 978-3-8169-3381-6 SP - 18 EP - 33 PB - Expert Verlag CY - Renningen ER - TY - RPRT A1 - Bestle, Dieter A1 - Lockan, Michael A1 - Hartwig, Lennard A1 - Martin, Ivo T1 - Q3D Optimierung vielstufiger Verdichter in der Vorauslegung und robuste multidisziplinäre Schaufelauslegung Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-42225 SN - 978-3-940471-30-7 PB - Brandenburgische Technische Universität Cottbus-Senftenberg, IKMZ-Universitätsbibliothek CY - Cottbus ; Senftenberg ER - TY - GEN A1 - Brenner, Tobias A1 - Hofmann, Timo A1 - Rieger, Karl-Josef A1 - Bestle, Dieter T1 - Untersuchung des Geräuschverhaltens von Kraftfahrzeug-Schwingungsdämpfern und Elastomerlagern T2 - 16. Internationale VDI-Tagung Reifen-Fahrwerk-Fahrbahn 2017 Y1 - 2017 SN - 978-3-18-092296-6 SP - 187 EP - 198 PB - VDI Verlag CY - Düsseldorf ER - TY - CHAP A1 - Hendler, Marco A1 - Bestle, Dieter A1 - Flassig, Peter Michael T1 - Cloning Strategy for Aerodynamic Compressor Design based on Throughflow Analysis T2 - Proceedings of Montreal 2018, Global Power and Propulsion Forum, 7-9.05.2018 N2 - 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. Y1 - 2018 UR - https://gpps.global/documents/events/montreal18/papers/design-modeling/GPPS-NA-2018-0144.pdf N1 - GPPS-NA-2018-0144 ER - TY - CHAP A1 - Extra, Simon A1 - Lockan, Michael A1 - Bestle, Dieter A1 - Flassig, Peter Michael T1 - A Comparison of Strategies for Efficient Core Engine Optimization with Coupled Subsystems T2 - Proceedings of Montreal 2018, Global Power and Propulsion Forum, 7-9.05.2018 N2 - 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. Y1 - 2018 UR - https://gpps.global/documents/events/montreal18/papers/design-modeling/GPPS-NA-2018-0097.pdf N1 - GPPS-NA-2018-0097 ER - TY - CHAP A1 - Urbano, Jose A1 - Golowin, Andrej A1 - Löhnert, Stefan A1 - Bestle, Dieter T1 - Mechanical Integrity of Steel Discs with Corrosion Pits T2 - 12th International Fatigue Congress (FATIGUE 2018), Poitiers Futuroscope, France, May 27-June 1st, 2018 N2 - 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. Y1 - 2018 U6 - https://doi.org/10.1051/matecconf/201816504012 PB - EDP Sciences CY - Les Ulis ER - TY - CHAP A1 - Extra, Simon A1 - Lockan, Michael A1 - Bestle, Dieter A1 - Flassig, Peter Michael T1 - Coupled Subsystem Optimization for Preliminary Core Engine Design T2 - 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 Y1 - 2017 SN - 978-84-697-5112-1 PB - Technical University CY - Madrid ER - TY - CHAP A1 - Chao, Chen-Xiang A1 - Bestle, Dieter A1 - Krüger, D. A1 - Meissner, Bernd T1 - Increasing the tooth root capacity of symmetric and asymmetric gears by optimizing the tooth root fillet shape T2 - International Gear Conference 2018, Lyon, 27.-29.08.2018, vol. 1 N2 - 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. Y1 - 2018 SN - 978-1-911033-42-4 SP - 531 EP - 541 PB - Chartridge Books Oxford CY - Oxford ER - TY - CHAP A1 - Brenner, Tobias A1 - Hofmann, Timo A1 - Hupfeld, J. A1 - Bestle, Dieter ED - Bargende, Michael ED - Reuss, Hans-Christian ED - Wiedemann, Jochen T1 - Process for Early Prediction of Noise Induced by Damper Struts T2 - 18. Internationales Stuttgarter Symposium : Automobil- und Motorentechnik Y1 - 2018 SN - 978-3-658-21193-6 U6 - https://doi.org/10.1007/978-3-658-21194-3_54 SP - 699 EP - 713 PB - Springer Fachmedien CY - Wiesbaden ER - TY - CHAP A1 - Hofmann, Timo A1 - Brenner, Tobias A1 - Hupfeld, J. A1 - Bestle, Dieter ED - Bargende, Michael ED - Reuss, Hans-Christian ED - Wiedemann, Jochen T1 - Generation of Optimal Shim Stacks for Valves in Automotive Dampers T2 - 18. Internationales Stuttgarter Symposium : Automobil- und Motorentechnik Y1 - 2018 SN - 978-3-658-21193-6 U6 - https://doi.org/10.1007/978-3-658-21194-3_56 SP - 729 EP - 743 PB - Springer Fachmedien CY - Wiesbaden ER - TY - GEN A1 - Hendler, Marco A1 - Bestle, Dieter A1 - Flassig, Peter Michael T1 - Component-specific Engine Design Taking into Account Holistic Design Aspects T2 - International Journal of Turbomachinery, Propulsion and Power Y1 - 2018 U6 - https://doi.org/10.3390/ijtpp3020012 SN - 2504-186X N1 - This article belongs to the Special Issue Selected Papers from the 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery VL - 3 IS - 2 SP - 1 EP - 16 ER - TY - GEN A1 - Ivanov, Dmitrij A1 - Bestle, Dieter A1 - Janke, Christian T1 - A Response Surface Based Strategy for Accelerated Compressor Map Computation T2 - 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 Y1 - 2017 SN - 978-84-697-5112-1 PB - Technical University CY - Madrid ER - TY - CHAP A1 - Ivanov, Dmitrij A1 - Bestle, Dieter A1 - Janke, Christian ED - Andrès-Pèrez, Esther ED - González, Leo M. ED - Periaux, Jacques ED - Gauger, Nicolas R. ED - Quagliarella, Domenico ED - Giannakoglou, Kyriakos C. T1 - A Response Surface Based Strategy for Accelerated Compressor Map Computation T2 - Evolutionary and Deterministic Methods for Design Optimization and Control With Applications to Industrial and Societal Problems Y1 - 2018 SN - 978-3-319-89889-6 SN - 978-3-319-89890-2 U6 - https://doi.org/10.1007/978-3-319-89890-2_14 SP - 211 EP - 226 PB - Springer International Publishing CY - Cham ER -