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设计了耐冲击吸能车体,其前端司机室控制台前端和尾端为塑性大变形区域,中间载客区为弹性小变形区域。建立轻轨列车的等效简化模型。对实际模型和简化模型在同样工况下进行了撞击计算,结果显示等效模型和简化模型的变形过程相似,力—位移曲线也基本相同。在简化的轻轨车模型基础上,模拟6辆编组的轻轨列车以25km.h-1速度撞击一列静止的轻轨列车,得到各辆车的动力学响应。计算结果显示,车辆与车辆之间发生了多体耦合撞击,每辆车都产生了塑性变形,其中头车前端塑性变形较大。
The impact-resistant energy-absorbing body is designed. The front end and the tail end of the driver’s cab console are plastic large deformation areas, and the middle passenger area is a small elastic deformation area. Establishing equivalent simplified model of light rail train. The impact calculation of the actual model and the simplified model under the same working condition shows that the deformation process of the equivalent model and the simplified model are similar and the force-displacement curves are basically the same. Based on the simplified light rail vehicle model, six light rail vehicles were simulated to collide with a stationary light rail vehicle at a speed of 25km.h-1 to obtain the dynamic response of each vehicle. The calculation results show that the multi-body coupling collision occurs between the vehicle and the vehicle, and each vehicle has a plastic deformation, in which the front end of the head vehicle has a large plastic deformation.