基于能量分配的车身正面碰撞吸能区计算方法研究  

Research of Front Crash Energy Absorbing Calculation Method based on Crash Energy Distribution

作　　者：邱国华[1] 

机构地区：[1]上海汽车集团股份有限公司技术中心,上海201804

出　　处：《上海汽车》2016年第5期8-12,共5页Shanghai Auto

基　　金：上海市科学技术委员会项目的资助;项目编号:13DZ1107000

摘　　要：文章通过对碰撞吸能过程的分解和能量分配的分析研究,找出碰撞能量与纵梁加速度及吸能长度之间的关系,在设计开发前期,通过前期项目经验得到的加速度曲线拟合出平均值和整车重量,针对正面高速碰撞、正面低速碰撞、偏置碰撞3种工况,计算出初始的碰撞吸能区空间需求,包括前部缓冲梁长度、前纵梁吸能区长度、发动机布置空间等。并使用EXCEL内置的VB语言,将吸能公式转变为可视化的计算程序,将成熟的经验编制成自动化的计算机流程,提高设计开发效率。Through front crash process decomposition and calculation of energy distribution, the relationship between crash energy, longitudinal acceleration and length of energy absorption are found out. Early in the design and development, the acceleration curve fitting average and the vehicle weight is obtained by the pre project experience. The initial crash energy and absorbing zone length is calculated including the length of the front buffer beam, the front longitudinal beam ceiling length and arrangement of engine room. And the EXCEL VB language is used, and the absorb energy formula is transferred to the visualization of the calculation process to improve the efficiency of design and development.

关 键 词：能量分配 正面碰撞 吸能 

分 类 号：U463.82[机械工程—车辆工程]