The Experiment Study for Fatigue Strength of Bogie Frame of Beijing Subway Vehicle Under Overload Situation

Jishan Li1, Jinhai Wang 2, 3, Xi Li 4, Jianwei Yang*, 2, 3, Haitao Wang4
1 Locomotive and Research Institute, China Academy of Railway Sciences, Beijing 100081, P.R. China
2 School of Machine-Electricity and Automobile Engineering, Beijing University of Civil Engineering and Architecture. Beijing 100044, P.R. China
3 Beijing Engineering Research Center of Monitoring for Construction Safety, Beijing University of Civil Engineering and Architecture, Beijing 100044, P.R. China
4 Subway Operation Technology Centre, Mass Transit Railway Operation Corporation LTD, Beijing 102208, P.R. China

Yang et al.; Licensee Bentham Open

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


In this paper, a problem for safety of bogie frame of subway vehicle under overload situation has been discussed. Firstly, the structure of bogie frame and service condition are introduced to explain the reason caused fatigue failure. Then, the testing points are selected in terms of the structure of bogie frame, the characteristics of processing technique, load transfer path and the operation situation of subway vehicle. Based on them, the experiment for acquiring stress data during peak of service is done. After that, the process of fatigue analysis is presented with rainflow cycle counting method using the data above. From the Miner rule, nominal stress method and Goodman relation, the formula for fatigue strength assumed infinite life is obtained. Finally, the results of fatigue analysis according to the approach above is presented in the form of table. The research work provides guidance for maintaining the bogie frame.

Keywords: Bogie frame, fatigue strength, nominal stress method, subway vehicle .