摘要
针对保险杠系统低速碰撞的特点,提出了一种新型的负泊松比结构吸能盒,以提高汽车的耐撞性和能量吸收性能。以峰值碰撞力和平均碰撞力为两个子系统,进行了多学科协同优化设计,并与NSGA‑II算法的优化结果进行了比较。仿真结果表明,基于多学科优化方法,新型吸能盒的耐撞性和吸能性能得到了有效提高。
To improve the crashworthiness and energy absorption performance,a novel crash box negative Poisson’s ratio(NPR)structure is proposed according to the characteristics of low speed collision of bumper system.Taking the peak collision force and the average collision force as two subsystems,a multidisciplinary collaborative optimization design is carried out,and its optimization results are compared with the ones optimized by NSGA-II algorithm.Simulation results show that the crashworthiness and energy absorption performance of the novel crash box is improved effectively based on the multidisciplinary optimization method.
作者
鲁广超
舒佳豪
赵万忠
LU Guangchao;SHU Jiahao;ZHAO Wanzhong(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China;Department of Information Management,Zhengzhou Metro Company Limited,Zhengzhou 450061,P.R.China)
关键词
吸能盒
多学科优化
负泊松比
能量吸收
低速碰撞
crash box
multidisciplinary optimization
negative Poisson’s ratio
energy absorption
low-speed collision
