基于有限元法的多级吸能式防撞垫碰撞仿真分析

Collision Simulation Analysis of Multi-stage Energy-absorbing Anti-collision Pad Based on Finite Element Method

本文提出笔者设计的一种多级吸能式防撞垫结构,目的在于有效保护后方追尾乘用车安全的基础上,实现吸能式防撞垫产品良好的维修经济性及损伤部件更换的便捷性。运用Hypermesh软件进行有限元碰撞仿真模型的前处理,采用LS-Dyna软件进行碰撞模型的计算,通过多级吸能式防撞垫碰撞仿真研究,获得其碰撞加速度、碰撞变形、吸能特性等数据指标,为多级吸能式防撞垫的研发提供理论依据。

This article proposes a multi-stage energy-absorbing crash pad structure designed by the author.The purpose is to effectively protect the safety of rear-end passenger cars,and achieve good maintenance economy of energy-absorbing crash pad products and convenient replacement of damaged parts.Use Hypermesh software for the pre-processing of the finite element collision simulation model,and use LS-Dyna software for the calculation of the collision model.Through the collision simulation study of the multi-stage energy-absorbing anti-collision pad,the data of its collision acceleration,collision deformation,energy absorption characteristics and other data are obtained.The indicators provide a theoretical basis for the research and development of multi-level energy-absorbing anti-collision pads.