高速客车车体端板复合材料层合结构的力学性能数值模拟

Numerical Simulation of Composite Material Mechanical Strength of Flat End Coverings on High-Speed Train

在高速铁路列车工程应用中典型的一种复合材料为纤维增强复合材料,它主要表现为正交各向异性,对于这种材料组成的较复杂的结构的数值模拟,一直是实际工程设计中的难点.基于对该复合材料做成的样品先做材料性能实验,得到相应的材料参数,然后对车体端板层合结构进行几何建模,采用大型通用软件Hypermesh进行网格划分,采用Ansys软件进行数值模拟,采用特有的层合单元模拟复合材料多层结构的特性,分别模拟了普通层结构及三明治结构,最后采用最大应力失效准则对该端板结构进行强度校核,为该端板结构的开发研制提供了设计依据.

Simulation of composite material mechanics strength is difficult, especially for the complex contracture in engineering design application. Based on the experiment data and by using large general program Hypermesh/Ansys, numerical simulation of flat end coverings on a MoR CA250 electric train body were conducted,and the maximum stress criterion is used to evaluate the composite material failure, which provides the basis of application design.