|Table of Contents|

Modeling and simulation of railway vehicle wheel considering thermo-mechanical coupling(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2016年05期
Page:
30-41
Research Field:
载运工具运用工程
Publishing date:

Info

Title:
Modeling and simulation of railway vehicle wheel considering thermo-mechanical coupling
Author(s):
WEN Yong-peng1;  XU Xiao-jun1;  SHANG Hui-lin2;  LI Qiong1
1. College of Urban Railway Transportation, Shanghai University of Engineering Science, Shanghai 201620, China; 2. School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, China
Keywords:
railway vehicle;  wheel;  thermo-mechanical coupling;  structure field;  thermal field;  abrasion
PACS:
U270.1
DOI:
-
Abstract:
Urban railway vehicle wheel was taken as research object, and an S-plate wheel model was established. The features of structural stress and thermal stress of wheel under different abrasions were investigated respectively by using FEM, the effects of thermo-mechanical coupling in the structure field and the thermal field on the stress characteristic of wheel were analysed, and the coupling rules of structural stress and thermal stress were obtained by considering thermo-mechanical coupling. Simulation result shows that the structural stress, the thermal stress and the coupling stress are all nonlinear with the development of tread abrasion of wheel. The coupling stress is stable when the wheel diameter ranges from 840 mm to 800 mm. When the diameter is less than 800 mm, the coupling stress grows faster, especially, when the diameter is 770 mm, the coupling stress rises rapidly. The coupling stress reaches 179.5 MPa under the abrasion-limit working condition. The coupling stress of wheel is produced by the superposition of complex three dimensional force system. For the coupling stress distribution, the phenomenon of drift exists at the position of the maximum coupling stress of wheel plate. The coupling stress of wheel plate becomes maximum at the brake end time, and is greater than both the maximum structural stress and the maximum thermal stress. Therefore, the coupling stress plays a leading role in the wheel stresses. For the structure design of wheel, it is recommended to consider the coupling role between the structural stress and the thermal stress, and to think the coupling stress as the evaluation index of wheel fatigue strength. 3 tabs, 23 figs, 26 refs.

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Last Update: 2016-10-20