针对简单链形悬挂接触网与DSA380型受电弓的仿真问题,基于MSC-MARC有限元软件,采用京滓城际铁路实际参数建立接触网和考虑弹性变形的受电弓模型,对受电弓一接触网动态性能进行仿真分析。在建模过程中采用欧拉-伯努利梁模型来模拟接触线和承力索;考虑弓头和上框架的弹性变形及其侧滚运动、垂向运动等,并通过非线性弹簧进行链接;受电弓和接触网模型之间通过接触实现耦合,将弓网作为一个整体进行研究。仿真结果表明:DSA380型受电弓以350km/h速度通过简单链形悬挂时,其平均接触力为190.35N,接触线的动态抬升量在18.1~73.7mm之间。通过与西门子公司提供的结果及实测结果比较,可以看出本文建立的弓网系统有限元模型是正确和有效的。
The dynamic performance of the stitched catenary and the DSA380 pantograph was analyzed. Based on MSC-MARC simulation platform and the practical parameters of the catenary network of the Beijing-Tianjin Intercity High-speed Railway, the finite element models of the pantograph and catenary were established. In the models, nonlinear flexible messenger wires and overhead contact wires were modeled by using the Euler- Bernoulli flexible beam; the pan-head and top frame of the pantograph were regarded as an elastic body which included several parameters such as pitching and vertical vibrations, and the pantograph was modeled by using nonlinear springs. Furthermore, on the basis of the contact elements, the coupled pantograph and catenary were analyzed as a whole system. The computation results show as follows. The average pantograph-catenary contact pressure is 190.35 N and dynamic uplift contact position is between 18. 1 mm and 73.7 ram. Compared with the simulation results provided by Siemens and the field measured results, the model proves correct and effective.