基于Simsolid的动车组转向架构架疲劳分析

Fatigue Durability Analysis of High-speed EMU Bogies Based on Simsolid

目前,转向架构架的疲劳CAE分析都是基于传统的离散有限元法,分析之前,需对转向架构架进行网格划分,其网格质量对分析精度产生重大影响。然而,动车组转向架构架的结构十分复杂,要想得到符合计算要求的有限元网格,除了需要具备高超的网格划分技巧外,还需花费工程师大量的时间。本文采用无网格方法,基于Simsolid软件,实现了动车组转向架构架的疲劳耐久分析。该方法仅花费了传统方法三十分之一的时间,且保证了足够的计算精度,具有重要的工程意义。

At present,the fatigue CAE analysis of bogie frame is based on the traditional discrete finite element method.Before the analysis,the bogie frame needs to be meshed,and the mesh quality has a significant impact on the analysis accuracy.However,the structure of the EMU bogie frame is very complex.In order to obtain the finite element mesh that meets the calculation requirements,in addition to superb mesh generation skills,engineers need to spend a lot of time.In this paper,based on Simsolid software,the meshless method is used to realize the fatigue durability analysis of the EMU bogie frame.This method only takes one thirtieth of the time of the traditional method,and ensures sufficient calculation accuracy,so it has important engineering significance.