Authors: Feng Pan; Ping Zhu
Addresses: State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, China. ' State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, China
Abstract: Lightweight design of vehicle front-end structure was performed under crashworthiness and vibration performance, in which surrogate models were employed for function approximation. An optimisation methodology based on multiple surrogates was proposed to select the most accurate one from a set of surrogates during the iterative optimisation process. It shows that different surrogates elicit different crashworthiness responses, and the most accurate one would change among iterations, which means the traditional way of selecting the best surrogate from an initial subset and discarding the rest is inappropriate. The proposed methodology would also be a promising strategy for surrogate-based optimisation in engineering application.
Keywords: vehicle design; lightweight design; crashworthiness; multiple surrogates; iterative optimisation; Sobol; front end structure; vehicle front end; crashworthiness; vehicle vibration; surrogate models; modelling.
International Journal of Vehicle Design, 2011 Vol.57 No.2/3, pp.124 - 147
Available online: 05 Jan 2012 *Full-text access for editors Access for subscribers Purchase this article Comment on this article