A Study on Fatigue Strength Improvement for Tension Clamp of Railway Using Work Hardening

4th International Conference on Mechanical and Aeronautical Engineering

机械制造;航空航天工程

Cho, Jeong-Gil^1 ; Kim, Jun-Woo^2 ; Koo, Jeong-Seo^3

Complex Research Center for Materials and Components of Railway, Seoul National University of Science and Technology, Korea, Republic of^1

Department of Rolling Stock System, Seoul National University of Science and Technology, Korea, Republic of^2

Department of Railway Safety Engineering, Seoul National University of Science and Technology, Korea, Republic of^3

关键词: Clamping Force;    Dynamic behaviours;    Fatigue strength;    FE analysis;    Safe operation;    Stress and strain distribution;    Tension clamps;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/491/1/012028/pdf
DOI  :  10.1088/1757-899X/491/1/012028

学科分类：航空航天科学

来源: IOP

【 摘 要 】

Since the tension clamp is essential for the safe operation of trains, the problem of the broken tension clamp must be carefully managed. The damage of the tension clamp can be caused by various reasons such as track conditions and dynamic behaviours of trains. In this paper, the improvement of durability through the improvement of fatigue strength was studied by considering the experiment results and the FE analyses. First, the analytical model was verified by comparing the results of the stress and strain distributions with the initial clamping force and the results of the FE analyses. And then, the method to improve the fatigue strength characteristics was analytically evaluated by considering the behaviour of tension clamp (middle band and spring arm) and work hardening characteristics.