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Research on the Lightweight Design of Body-Side Structure Based on Crashworthiness Requirements

查看全文 作　　者：[1]庄蔚敏;[1]施宏达;[2]解东旋;[3]陈延红;[1]杨昌海 高影响力作者 机构地区：[1]State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130025,China;[2]FAW-Volkswagen Automotive Co.,Ltd.,Changchun 130011,China;[3]Department of Engineering Science,University of Oxford,Oxford OXI 3PJ,UK高影响力机构 出　　处：《Journal of Shanghai Jiaotong university(Science)》索引2019年第24卷第3期,共10页高影响力期刊 基　　金：the National Natural Science Foundation of China(Nos.51775227 and 51375201);the National New Energy Vehicle Pilot Project(2016YFB0101601);the Jilin Scientific and Technological Development Program(No.20170101130JC) 摘　　要：Crash worthiness is the most significant variable during lightweight design of vehicle struc tures.However,crashworthiness studies using the single substructure-based method are limited due to the negligence of interactions among substructures.Thus,a whole structure-based study was conducted for the lightweight design of a body-side structure.In this study,a full finite element model was firstly created and then modified into a simplified model for structural improvements,where the major load-carrying subassemblies were improved from the perspectives of crashworthiness and manufacturing costs.Finally,sensitivity analyses were conducted to further optimize the strength distribution,based on which an adaptive response surface method was employed for thickness optimization of the structure.It is found that through the structural improvements and optimizations,the weight of the structure was significantly reduced even when its crashworthiness was improved.This indicates that the whole structure-based method is effective for lightweight design of vehicle structures. 关 键 词：body-side structure SIDE IMPACT sensitivity analysis CRASHWORTHINESS WEIGHT REDUCTION
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