论文部分内容阅读
对接触网在受电弓/接触网垂向耦合振动过程中的瞬态位移和应力响应进行研究。对某试验接触网进行了动应力测试实验,并与有限元计算结果进行比较,误差在10%以内。利用有限元软件ANSYS建立Re250 0型简单链型悬挂接触网的二维模型,采用模态叠加法进行瞬态仿真分析,得到接触网的位移及应力时间历程。结果说明随着车速提高,接触网振动加剧,动态位移和应力显著增加,对接触网的疲劳和安全可靠性会造成严重影响。
The transient displacement and stress response of catenary in the process of vertical coupling vibration of pantograph / catenary were studied. The dynamic stress test of a test catenary was carried out and compared with the finite element calculation, the error was within 10%. The finite element software ANSYS was used to establish the two-dimensional model of Re250 0 simple chain suspension catenary. The modal superposition method was used to carry out transient simulation analysis to get the catenary displacement and stress time history. The results show that as the vehicle speed increases, the vibration of the catenary increases and the dynamic displacement and stress increase significantly, which will seriously affect the fatigue and safety of the catenary.