期刊
ENGINEERING OPTIMIZATION
卷 52, 期 8, 页码 1362-1381出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/0305215X.2019.1657112
关键词
Reliability-based design optimization; nonlinear correlation; copula functions; vehicle body crashworthiness; Bayesian method
资金
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [51621004]
- Research Foundation of Education Bureau of Hunan Province of China [18A403]
Vehicle body crashworthiness is crucial in a traffic accident. It can protect passengers from serious injury or death and reduce vehicle damage. To provide a more effective design framework for ensuring crash safety, a reliability-based design optimization (RBDO) method for vehicle body crashworthiness considering complex parametric correlation is developed by integrating copula functions. An RBDO model is formulated for the vehicle body crashworthiness problem based on a finite element model of a vehicle crash. Taking into account the correlation of random parameters, the optimal copula function is selected by the Bayesian method to model parametric correlation and build the joint probability distribution function. An efficient solution strategy is provided to perform the reliability analysis and optimization design of crashworthiness. The results demonstrate that the proposed method is reliable and has a high accuracy for crashworthiness design.
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