Finite element analysis and optimized design for the end car underframe of the 250km/h EMU

HE Xiaolei; LIU Chenhui; SONG Wei; SONG Mingyang; HUO Xinlong

doi:10.7512/j.issn.1001-2303.2020.05.06

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Finite element analysis and optimized design for the end car underframe of the 250km/h EMU
Vol. 50, Issue 5, Pages: 31-36(2020)
Published：2020
DOI： 10.7512/j.issn.1001-2303.2020.05.06
稿件说明：

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DOI：

HE Xiaolei, LIU Chenhui, SONG Wei, et al. Finite element analysis and optimized design for the end car underframe of the 250km/h EMU[J]. Eletric Welding Machine2020, 50(5): 31-36. DOI： 10.7512/j.issn.1001-2303.2020.05.06.

摘要

底架作为动车组车体关键承载部件

其结构设计的刚度及强度对整车的安全使用及性能有很大影响。采用ANSYS有限元方法

在整车分析的基础上

对250 km/h动车组底架的结构进行强度分析研究。对底架主要的典型载荷下应力集中部位(牵引梁等)进行局部应力分析并优化

对250 km/h动车组头车车体结构进行了静强度试验。在各工况和载荷作用下

各应力测点的应力及合成应力和位移测点的位移值均小于所用材料的弹性极限

底架结构设计合理。

Abstract

The underframe is the key bearing part of the body of EMU

and the rigidity and strength of its structure design have a great influence on the safe operation and performance of EMU. The strength of the underframe structure of the 250 km/h EMU is analyzed and studied by FEM ANSYS based on the analysis of whole car body. Under typical load

the local stress of stress concentrated parts of underframe（traction beam

etc.） is analyzed and optimized

and the static strength test is carried out on the end car body structure of 250 km/h EUM. Under various operating conditions and loads

the stress and synthetic stress of each stress measuring point and displacement of displacement measuring point are all less than the elastic limit of the material used

and the structure design of the underframe is reasonable.