Date of Publication:2017-01-01

Journal:机械工程学报

Institution:运载工程与力学学部

Volume:53

Issue:12

Page Number:102-109

ISSN:0577-6686

Abstract:The crashworthiness of B-pillar with tailored properties in vehicle side impact is researched based on dynamic explicit finite element method by taking the energy absorption and maximum intrusion of B-pillar as evaluation index.The effect of gradient strength distribution and gradient thickness distribution against collision performance is analyzed and their performance is compared to uniform strength B-pillar.In addition,radial basis function is applied to build the surrogate model of B-pillar and by which the multi-objective optimization design of B-pillar with tailored properties is carried out then.The results show that the performance of B-pillar with tailored properties are improved remarkably after optimization design,which proves that multi-objective optimization can further improve the comprehensive collision performance of vehicle structure.

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