虚拟轨道列车芳纶蜂窝裙板结构设计与验证

Structure design and verification of kevlar honeycomb apron board for virtual tracks trains

虚拟轨道列车由于采用胶轮系统,对车体裙板轻量化提出新的需求。研究采用芳纶蜂窝裙板结构取代传统的铝合金型材,通过铺层设计选取最优的铺层方案,仿真计算验证在不同工况下受力情况,并进行冲击振动试验。结果表明:采用芳纶蜂窝夹芯结构能实现裙板减重 40% 以上,同时满足车辆各种工况及疲劳寿命要求。

Due to the use of a rubber-tyred system,the virtual tracks trains put forward new requirements for lightweight apron boards.In this paper,a kevlar honeycomb sandwich structure is used to replace the traditional aluminum alloy.The optimal ply scheme is selected through the ply design.The simulation calculation verifies the stress under different working conditions and the impact vibration experiment.The results show that this kevlar honeycomb sandwich panel can achieve more than 40% lightweight of the apron boards,and meet the requirements of vehicle working conditions and fatigue life.