摘要
以高速磁浮列车为例,采用动力显式有限元软件LS-DYNA,模拟端车、中间车三维模型撞击刚性墙,得到单节车撞击特性仿真曲线;选定速度为12 m/s磁浮列车与10 t公路汽车(静止)发生迎面碰撞作为碰撞场景,基于多体系统动力学理论,对整列车一维模型做数值仿真,以分析磁浮列车撞击动力性能。仿真结果表明:在此碰撞场景中,中部载人区有足够的安全生存空间,且每节车的加速度峰值小于旅客颈部损伤的阀值,乘客不会出现严重伤亡情况。
Taking the high-speed maglev train as an exam- ple, a three-dimensional finite element model of the end car and the middle car is established to simulate the fixed rigid wall by using the dynamic explicit finite element soft- ware LS-DYNA, and the characteristic curve is also ob- tained. The collision is selected in the condition that a 10- ton truck is hit by the train at the speed of 12.5 m/s. Then, one dimensional model of the whole train is estab- lished to analyze the crashworthiness based on the dynamics theory of multi- body system. The result indicates that, during the collision process, the middle areas of the train have enough living space, while the peak acceleration of each vehicle is less than the threshold value that the passen- ger＇s neck could bear, in such a case the passengers will not have any serious casualties.
出处
《城市轨道交通研究》
北大核心
2012年第12期78-81,96,共5页
Urban Mass Transit
关键词
磁浮列车
撞击
动力性能
maglev train
collision
dynamic behavior
