Journal article
Reliability-based design optimization for crashworthiness of vehicle side impact
Structural and multidisciplinary optimization, Vol.26(3), pp.272-283
02/2004
DOI: 10.1007/s00158-003-0345-0
Abstract
With the advent of powerful computers, vehicle safety issues have recently been addressed using computational methods of vehicle crashworthiness, resulting in reductions in cost and time for new vehicle development. Vehicle design demands multidisciplinary optimization coupled with a computational crashworthiness analysis. However, simulation-based optimization generates deterministic optimum designs, which are frequently pushed to the limits of design constraint boundaries, leaving little or no room for tolerances (uncertainty) in modeling, simulation uncertainties, and/or manufacturing imperfections. Consequently, deterministic optimum designs that are obtained without consideration of uncertainty may result in unreliable designs, indicating the need for Reliability-Based Design Optimization (RBDO).Recent development in RBDO allows evaluations of probabilistic constraints in two alternative ways: using the Reliability Index Approach (RIA) and the Performance Measure Approach (PMA). The PMA using the Hybrid Mean Value (HMV) method is shown to be robust and efficient in the RBDO process, whereas RIA yields instability for some problems. This paper presents an application of PMA and HMV for RBDO for the crashworthiness of a large-scale vehicle side impact. It is shown that the proposed RBDO approach is very effective in obtaining a reliability-based optimum design.
Details
- Title: Subtitle
- Reliability-based design optimization for crashworthiness of vehicle side impact
- Creators
- B.D Youn - Center for Computer-Aided Design and Department of Mechanical Engineering, College of Engineering The University of Iowa 52241 Iowa City IA USAK.K Choi - Center for Computer-Aided Design and Department of Mechanical Engineering, College of Engineering The University of Iowa 52241 Iowa City IA USAR.-J Yang - Safety Research and Development P.O. Box 2053, MD2115, SRL 48121 Dearborn MI USAL Gu - Safety Research and Development P.O. Box 2053, MD2115, SRL 48121 Dearborn MI USA
- Resource Type
- Journal article
- Publication Details
- Structural and multidisciplinary optimization, Vol.26(3), pp.272-283
- Publisher
- Springer Berlin Heidelberg; Berlin/Heidelberg
- DOI
- 10.1007/s00158-003-0345-0
- ISSN
- 1615-147X
- eISSN
- 1615-1488
- Language
- English
- Date published
- 02/2004
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984064248902771
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