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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.
A typical composite material used in high-speed railway train engineering is fiber-reinforced composite material, which is mainly characterized by orthotropic anisotropy. Numerical simulation of more complex structures composed of such materials has been the subject of practical engineering design Difficulties: Based on the sample made of the composite material performance experiments to get the appropriate material parameters, and then the geometry of the vehicle body end plate laminate structure, the use of large-scale common software Hypermesh grid, the use of Ansys software The characteristics of the multi-layer structure of the composite material are simulated by the special laminating unit. The common layer structure and the sandwich structure are simulated respectively. Finally, the strength of the end plate structure is checked by the maximum stress failure criterion. Development provides the basis for the design.