某6756型客车侧翻碰撞安全性分析  

Analysis of Rollover Crashworthiness of a 6756 Type Bus

作　　者：王书举[1] 潘一山[1] 张国胜[2] 崔海涛[2] 

机构地区：[1]辽宁工程技术大学,辽宁阜新123000 [2]交通运输部公路科学研究院,北京100088

出　　处：《公路交通科技》2015年第6期154-158,共5页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(51405213)

摘　　要：针对客车侧翻碰撞过程中其动态数据获取难、不够稳定等问题,以某6756型客车为对象,建立了客车整车有限元模型和侧翻碰撞数值模拟环境。在LS-DYNA环境下,依据ECE R66法规,进行了客车整车右侧翻碰撞过程动态数值仿真分析。分别对侧翻碰撞过程中系统能量耗散、主要结构吸能效果和上部结构变形规律进行了分析。将仿真计算结果与实车试验结果对比,验证了客车整车侧翻碰撞有限元分析评估的有效性。研究结果表明:该客车右侧围、顶盖和左侧围吸收的能量分别占车辆总吸收能量的40%,30%,15%;同一窗立柱变形量从上至下依次减小,不同窗立柱同一距地高度变形量从前至后依次减小。As the dynamic data acquisition in the process of bus rollover crash is difficult and instability, taking a 6756 type bus as the object, we established the finite element model and the numerical simulation environment for rollover crash of passenger vehicle. Under the LS - DYNA environment and according to the ECE R66 regulation, we conducted the dynamic numerical simulation of passenger vehicle suffered from right rollover crash. We analyzed system energy dissipation, energy-absorbing effect of main structure and deformation of superstructure in process of rollover crash respectively. Then, by comparing the simulation result with the real vehicle testing data, we verified the effectiveness of the finite element analysis method of evaluating passenger vehicle＇s rollover crash. The result shows that （ 1 ） the absorbed energy of right side, top and left side walls of the bus accounted for 40%, 30%, 15% of the total absorbed energy respectively; （2） the deformation of pillars in the same window successively decreased from top to bottom, and the deformation of pillars at the same height in different windows decreased from the front to the back.

关 键 词：汽车工程 汽车被动安全 有限元法 侧翻碰撞 生存空间 

分 类 号：U467.14[机械工程—车辆工程]