汽车前纵梁碰撞吸能特性的优化设计  

Optimum Design for Crash Energy Absorption ability of Car Front Side Member

作　　者：吴广发[1] 赵希禄[1] 

机构地区：[1]江苏科技大学机械工程学院,江苏镇江212003

出　　处：《机械设计与研究》2011年第4期118-120,共3页Machine Design And Research

摘　　要：为了使汽车前纵梁在碰撞过程中能够吸收更多的能量,针对前纵梁的不同断面形状、板厚、焊点间距和焊点直径等设计参数,建立了前纵梁碰撞的有限元分析模型,并利用有限元软件LS-DYNA和响应曲面优化算法,进行了碰撞模拟仿真和优化设计。结果表明,优化后的前纵梁的碰撞吸能特性得到了显著的提高。In order to make the front side member of the car to absorb more energy during crashing,a finite element analysis model isestablished,according to the design parameters of the front side member,such as different cross-section shapes,thickness,spot weldpitch and spot diameter,etc.By using LS-DYNA and the response surface optimization algorithm to optimum design for the crashcharacteristics of side member,which can get the optimized front side member structure,which can absorb more energy than thegeneral front side member.

关 键 词：汽车设计 前纵梁 碰撞分析 优化设计 响应曲面法 

分 类 号：TH12[机械工程—机械设计及理论]