地铁头车底架结构耐撞性的优化研究  

Optimization Research on Structure Crashworthiness of Subway Vehicles

作　　者：刘文[1] 王乐李 许鹏善 李斌斌[1] 

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《机械研究与应用》2017年第1期8-9,共2页Mechanical Research & Application

摘　　要：基于地铁碰撞事故的严重性,利用非线性有限元软件LS-DYNA对地铁头车车体碰撞过程进行了数值仿真,并根据计算结果对车体底架进行了优化。结果表明,优化后防爬器先于车体底架发生变形,保护了车体结构,头车耐撞性较之前有了显著的提高。Based on the severity of subway accident, the impacting process of subway head-car bodies is numerically simulated by using the nonlinear finite element software LS-DYNA, and the undercarriage is optimized according to the results. It is concluded that after the optimization, the deformation of anti-climbing energy absorption device occurred before the deforma- tion of undercarriage, thus the crashworthiness of subway head-car body is much better than that before.

关 键 词：地铁碰撞 车体耐撞性 有限元仿真 优化 

分 类 号：U270.1[机械工程—车辆工程]