论文部分内容阅读
基于非线性有限元理论,建立了京津城际高速铁路弓网动态系统的有限元模型,采用欧拉-伯努利直梁模拟接触网各部件,采用铰链和非线性弹簧相互耦合模拟受电弓,借助MARC软件,对京津城际高速铁路弓网受流情况进行了动态仿真,并利用MARC的后处理功能显示弓网运动过程中的三维动态情况。计算得到了京津城际弓网动态系统的平均接触压力为160.68N,接触点动态抬升量变化范围为28.5～87.0mm。与西门子公司提供的仿真结果及京津城际现场的测试结果比较表明:有限元模型是正确和有效的,京津城际弓网动态系统具有良好的动态受流质量。
Based on the nonlinear finite element theory, a finite element model of the dynamic system of the Beijing-Tianjin intercity high-speed railway bow was established. The Euler-Bernoulli straight beam was used to simulate the components of the catenary, and the coupling was simulated by using the hinge and nonlinear spring With the help of MARC software, the dynamic simulation of the bow flow in the Beijing-Tianjin intercity high-speed railway was carried out. The MARC post-processing function was used to show the three-dimensional dynamic state of bow bow movement. The average contact pressure of the dynamic system of Beijing-Tianjin inter-city bow network is calculated to be 160.68N, and the dynamic lift of the contact point varies from 28.5 to 87.0mm. Compared with the simulation results provided by Siemens and the test results of Beijing-Tianjin inter-city site, the finite element model is correct and effective. The dynamic system of Beijing-Tianjin inter-city bow network has a good dynamic current quality.