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Multi-objective robust design optimization of a novel negative Poisson's ratio bumper system

查看全文 作　　者：ZHOU [1,2]Guan;ZHAO [1,2]WanZhong;MA [3]ZhengDong;WANG [1,2]ChunYan;LI [1]YuFang 高影响力作者 机构地区：[1]College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics;[2]State Key Laboratory of Mechanical Transmission, Chongqing University;[3]Department of Mechanical Engineering and Applied Mechanics, University of Michigan高影响力机构 出　　处：《Science China(Technological Sciences)》索引2017年第60卷第7期,共8页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51605219&51375007);the Natural Science Foundation of Jiangsu Province(Grant Nos.BK20160791&SBK2015022352);the Visiting Scholar Foundation of the State Key Lab of Mechanical Transmission in Chongqing University(Grant Nos.SKLMT-KFKT-201608,SKLMTKFKT-2014010&SKLMT-KFKT-201507);the Fundamental Research Funds for the Central Universities(Grant No.NE2016002) 摘　　要：Negative Poisson's ratio(NPR) structure has outstanding performances in lightweight and energy absorption, and it can be widely applied in automotive industries. By combining the front anti-collision beam, crash box and NPR structure, a novel NPR bumper system for improving the crashworthiness is first proposed in the work. The performances of the NPR bumper system are detailed studied by comparing to traditional bumper system and aluminum foam filled bumper system. To achieve the rapid design while considering perturbation induced by parameter uncertainties, a multi-objective robust design optimization method of the NPR bumper system is also proposed. The parametric model of the bumper system is constructed by combining the full parametric model of the traditional bumper system and the parametric model of the NPR structure. Optimal Latin hypercube sampling technique and dual response surface method are combined to construct the surrogate models. The multi-objective robust optimization results of the NPR bumper system are then obtained by applying the multi-objective particle swarm optimization algorithm and six sigma criteria. The results yielded from the optimizations indicate that the energy absorption capacity is improved significantly by the NPR bumper system and its performances are further optimized efficiently by the multi-objective robust design optimization method. 关 键 词：稳健优化设计 保险杠 负泊松比 多目标 系统 优化设计方法 粒子群优化算法 防撞性能
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