TITLE

Probability-based least square support vector regression metamodeling technique for crashworthiness optimization problems

AUTHOR(S)
Wang, Hu; Li, Enying; Li, G.
PUB. DATE
March 2011
SOURCE
Computational Mechanics;Mar2011, Vol. 47 Issue 3, p251
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper presents a crashworthiness design optimization method based on a metamodeling technique. The crashworthiness optimization is a highly nonlinear and large scale problem, which is composed various nonlinearities, such as geometry, material and contact and needs a large number expensive evaluations. In order to obtain a robust approximation efficiently, a probability-based least square support vector regression is suggested to construct metamodels by considering structure risk minimization. Further, to save the computational cost, an intelligent sampling strategy is applied to generate sample points at the stage of design of experiment (DOE). In this paper, a cylinder, a full vehicle frontal collision is involved. The results demonstrate that the proposed metamodel-based optimization is efficient and effective in solving crashworthiness, design optimization problems.
ACCESSION #
58605355

 

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