影响因子：2.6
所属单位：西南交通大学
发表刊物：International Journal of Simulation Modelling
刊物所在地：斯洛文尼亚
关键字：High-Speed Railway; Stitch Wire; Vibration; Fatigue Life; Simulation Model; FRICTION
摘要：Stitch wire is the key component in high-speed railway catenary. During the construction and operation of the catenary, tension changes can lead to fracture of the stitch wire. This study proposed a simulation method considering the structure and stress distribution of stitch wire to reveal the effect of tension changes on the fatigue life. Dynamic simulation model at a speed of 300 km/h was constructed to obtain the vibration load. A refined model of stitch wire was used to simulate the contact between the structures. Finally, the fatigue life of stitch wire was calculated when the tension changes by analysing the stress distribution under vibration. Results demonstrate that the lifting effect of the pantograph during operation causes vertical vibrations of stitch wire, and the stress concentration position is located at the connection with its clamp. As the tension increases form 2.0 kN to 5.0 kN, the range of vibration angle at the clamp decreases from 2.73 degrees to 1.33 degrees, and fatigue life increases from 1.36 x 106 to 8.76 x 106. The proposed method provides an accurate approach to simulate the load and fatigue life of stitch wire under real working conditions.
合写作者：Liu, J. D., Chen, Wu, J. Q., Han, F., Guan, J. F. (刘继冬,陈俊卿,吴积钦,韩峰,关金发)
第一作者：Liu, J. D. (刘继冬)
论文类型：SCI
通讯作者：Guan, J. F.(关金发)
学科门类：工学
一级学科：交通运输工程
卷号：22
期号：4
页面范围：643-654
ISSN号：1726-4529
是否译文：是
发表时间：2023-09-01