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 - TY - CHAP A1 - Extra, Simon A1 - Lockan, Michael A1 - Bestle, Dieter A1 - Flassig, Peter Michael ED - Andrès-Pèrez, Esther ED - González, Leo M. ED - Periaux, Jacques ED - Gauger, Nicolas R. ED - Quagliarella, Domenico ED - Giannakoglou, Kyriakos C. T1 - Coupled Subsystem Optimiziation for Preliminary Core Engine Design 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_33 SP - 513 EP - 527 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Bestle, Dieter A1 - Wehbi, Kassem T1 - Optimal Launch of Vehicles with Automated Transmission T2 - 4th Joint International Conference on Multibody System Dynamics, Montreal 2016 Y1 - 2016 SN - 978-0-9682827-9-3 PB - McGill University CY - Montreal ER - TY - CHAP A1 - Sun, Lu A1 - Xue, Rui A1 - Bestle, Dieter A1 - Wang, Guoping A1 - Zhang, Jianshu A1 - Rui, Xiaoting T1 - Vibration Analysis of Linear Beam with Moving Loads Based on Riccati Transfer Matrix Method for Multibody Systems T2 - 14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control - Quebec City, Quebec, Canada, August 26–29, 2018 Y1 - 2018 SN - 978-0-7918-5183-8 PB - ASME CY - New York ER - TY - CHAP A1 - Xue, Rui A1 - Sun, Lu A1 - Bestle, Dieter A1 - Wang, Guoping A1 - Chen, Dongyang A1 - Rui, Xiaoting T1 - Vortex-induced Vibration Analysis of a composite Riser System Based on the Transfer Matrix Method T2 - 14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control - Quebec City, Quebec, Canada, August 26–29, 2018 Y1 - 2018 SN - 978-0-7918-5183-8 PB - ASME CY - New York ER - TY - CHAP A1 - Ivanov, Dmitrij A1 - Bestle, Dieter A1 - Janke, Christian T1 - Fast Compressor Map Computation by Utilizing Support Vector Machine and Response Surface Approximation T2 - IEEE World Congress on Computational Intelligence, Rio de Janeiro, 8.-13.07.18 Y1 - 2018 UR - https://ieeexplore.ieee.org/document/8489554 SN - 978-1-5090-6014-6 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Ivanov, Dmitrij A1 - Bestle, Dieter A1 - Janke, Christian T1 - Unstrukturierte Berechnung von Verdichterkennfeldern mithilfe von SVM und Antwortflächen T2 - Luft- und Raumfahrt - Digitalisierung und Vernetzung, Deutscher Luft- und Raumfahrtkongress 2018, 04.-06. September 2018, Friedrichshafen, Graf-Zeppelin-Haus Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:101:1-2020011711430160129914 UR - https://www.dglr.de/publikationen/2020/480078.pdf N1 - DLRK2018-480078 PB - Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V. CY - Bonn ER - TY - GEN A1 - Extra, Simon A1 - Hendler, Marco A1 - Bestle, Dieter A1 - Flassig, Peter Michael T1 - Verbesserte Vorauslegung des Kerntriebwerks mithilfe eines kaskadierten Optimierungsprozesses T2 - Luft- und Raumfahrt - Digitalisierung und Vernetzung, Deutscher Luft- und Raumfahrtkongress 2018, 04.-06. September 2018, Friedrichshafen, Graf-Zeppelin-Haus Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:101:1-2020011711475557798029 UR - https://www.dglr.de/publikationen/2020/480163.pdf N1 - DLRK2018-480163 PB - Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V. CY - Bonn ER - TY - CHAP A1 - Kuslits, Márton A1 - Bestle, Dieter T1 - Symbolic Linearized Equations for Nonholonomic Multibody Systems with Closed-loop Kinematics T2 - 14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control - Quebec City, Quebec, Canada, August 26–29, 2018 Y1 - 2018 SN - 978-0-7918-5183-8 PB - ASME CY - New York ER - TY - GEN A1 - Urbano, Josè A1 - Bestle, Dieter A1 - Gerstberger, Ulf A1 - Flassig, Peter Michael T1 - Low-Order Representation of Manufacturing Variations Based on B-Spline Morphing T2 - ASME 2019 International Mechanical Engineering Congress and Exposition, November 11–14, 2019 Salt Lake City, Utah, USA Y1 - 2020 UR - https://asmedigitalcollection.asme.org/IMECE/proceedings-abstract/IMECE2019/59384/V02BT02A053/1072900 SN - 978-0-7918-5938-4 U6 - https://doi.org/10.1115/IMECE2019-10294 PB - American Society of Mechanical Engineers ER - TY - GEN A1 - Chao, Chen-Xiang A1 - Bestle, Dieter A1 - Krüger, David T1 - Tooth Root Shape Optimization of Thin-Rimmed Planet Gears T2 - 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 N2 - 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. Y1 - 2019 SN - 978-0-7918-5930-8 U6 - https://doi.org/10.1115/DETC2019-97345 ER -