高速列车复合材料地板振动性能分析  

Analysis on vibration performance of composite material floor of high-speed train

作　　者：郑路[1] 周劲松[1] 孙文静[1] 石晨[1] 

机构地区：[1]同济大学铁道与城市轨道交通研究院,上海201804

出　　处：《计算机辅助工程》2016年第3期52-57,共6页Computer Aided Engineering

基　　金：国家"十二五"科技支撑计划(2015BAG19B02;2015BAG13B01);中国博士后基金(2015M571597)

摘　　要：为分析不同复合材料高速列车地板减振性能的差异,对其进行力学性能测试,分别采用多层叠混合模型及单层模型计算复合结构材料的等效参数并验证.建立包含内装地板的高速列车车体有限元模型;基于实车线路测试结果,以车体底架振动加速度信号作为地板瞬态响应激励,计算复合地板材料结构的瞬态振动响应及振动传递率,得到不同复合材料地板的振动特性.研究结果表明:桦木芯材优于桤木芯材;外层面板厚度的增加使得地板的减振性能增强,但过大会导致减振性能下降;不锈钢面板比铝合金面板地板结构固有频率低且质量较大,不利于车体轻量化设计.To analyze the vibration reduction performance of different kinds of composite material floors of high-speed train, the mechanical performance tests are performed on the structures, and the equivalent parameters of the composite material floor are calculated using multi-layer model and single layer model separately and validated. The finite element model of a high-speed train body which includes inner decoration floor is built; based on the test data of real train on line, the vibration accelerations of train body underframe is considered as the excitations of transient response and the transient vibration response and vibration transfer rate are calculated for the composite material floor structures, and the vibration property of different composite material floors are obtained. The results show that, the core material of birch is better than that of alder; the vibration reduction performance is improved with the increase of outer panel thickness, but it decreases if the panel is too thick; the natural frequency of stainless steel panel floor is lower than that of aluminum alloy panel floor and not conducive to light weight design because of its bigger mass.

关 键 词：高速列车 复合材料地板 力学性能测试 等效材料特性参数 减振 

分 类 号：U270.1[机械工程—车辆工程]