Time-based metamodeling technique for vehicle crashworthiness optimization |
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| Authors: | Hu Wang G.Y. Li Enying Li |
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| Affiliation: | 1. Key Laboratory of Advanced Technology for Vehicle Body Design & Manufacture, College of Mechanical and Automobile Engineering, Hunan University, Changsha, 410082, PR China;2. School of Logistics, Central South University of Forestry and Teleology, Changsha, 41004, P.R. China;1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan 410082, PR China;2. Key Laboratory of Advanced Design and Simulation Techniques for Special Equipment, Ministry of Education, Hunan University, Changsha, Hunan 410082, PR China;3. Department of Mechanical Engineering and Engineering Science, The University of North Carolina at Charlotte, Charlotte, NC 28223-0001, USA;1. School of Automotive Studies, Tongji University, Shanghai 201804, China;2. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, China;3. School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia;1. BMW Group, Research and Innovation Centre, Knorrstraße 147, D-80788 Munich, Germany;2. Computational Mechanics, Department of Civil, Geo and Environmental Engineering, Technische Universität München, Arcisstr. 21, D-80333 Munich, Germany;1. Volkswagen AG, Group Innovation, Letter Box 17773, D-38436 Wolfsburg, Germany;2. Volkswagen AG, Group Innovation, Wolfsburg, Germany;3. AUDI AG, Ingolstadt, Germany;4. Vehicle Safety Institute, Graz University of Technology, Graz, Austria;5. Nonlinear Solid Mechanics, Faculty of Engineering Technology, University of Twente, Enschede, The Netherlands |
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| Abstract: | In automotive industry, structural optimization for crashworthiness criteria is of special importance in the early design stage. To reduce the vehicle design cycle, metamodeling techniques have become so widespread... In this study, a time-based metamodeling technique is proposed for the vehicle design. The characteristics of the proposed method are the construction of a time-based objective function and establishment of a metamodel by support vector regression (SVR). Compared with other popular metamodel-based optimization methods, the design space of the proposed method is expanded to time domain. Thus, more information and features can be extracted in the expanded time domain. To validate the performance of the time-based metamodeling technique, cylinder impacting and full vehicle frontal collision are optimized by the proposed method. The results demonstrate that the proposed method has potential capability to solve the crashworthiness vehicle design. |
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