基于耐撞性可靠性优化的SUV车架改进  

Improvement Analysis of the SUV Frame for Crashworthiness Reliability Optimization

作　　者：吴斌[1] 辛勇[1] 叶盛 

机构地区：[1]南昌大学机电工程学院,南昌330031 [2]比亚迪汽车工程研究院,深圳518118

出　　处：《机械设计与研究》2015年第1期160-164,共5页Machine Design And Research

基　　金：国家自然科学基金资助项目(50645032);江西省科技攻关计划资助项目(C0202400)

摘　　要：建立了SUV的车架和车身的有限元模型,针对40%偏置碰撞车架变形严重,车内乘员生存空间严重受到挤压的问题,提出了对车架各主要部件进行改进设计并在加强区域适当增加加强件,建立优化数学模型对前纵梁进行耐撞性可靠性优化设计。对改进和优化后的整车安全性进行碰撞仿真分析和实车实验验证,乘员生存空间得到明显的改善。The SUV＇s frame and body finite element model is estavlished for the problems of the frame serious deformation and vehicle passengers＇ living space serious extrusion within the 40% offset front impact. The improvement for the design of the frame main components and the appendant some high strength sheets in appropriate regions are proposed. Establish the optimization design mathematic model to optimize the crashworthiness reliability of the front longitudinal. For the safety of the whole improved and optimized vehicle, compare its value of crashworthiness simulation with real vehicle collision test, find that the passengers＇ living space has a remarkable improvement.

关 键 词：车架 偏置碰撞 耐撞性可靠性 优化设计 实车实验 

分 类 号：U463[机械工程—车辆工程]