基于有限元的交流刚性接触网定位点刚度仿真研究

Study on Finite Element based Registration Point Stiffness Simulation for AC Rigid Suspended OCS

受电弓高速通过刚度较大的定位点时会受到冲击作用,对弓网受流质量和接触线磨耗产生不良影响。本文建立了包含膨胀接头的刚性接触网有限元模型,受电弓采用三质量模型,通过接触对将两者进行耦合,依据标准EN 50318中仿真模型确认流程验证了弓网仿真模型的有效性,并在此基础上分析了全锚段定位点刚度整体变化以及仅锚段关节处定位点刚度变化时的弓网动态受流质量,比选出最优定位点刚度取值方案。

The pantograph will be impacted when it is passing in high speed through the registration point with higher stiffness,leading to a negative effect to the current collecting quality of pantograph-catenary and the wear of contact wire.The paper illustrates that a finite element model is established for the rigid catenary contained with expansion joints,a three-mass model is established for the pantograph,coupling is made by contacting of the two,so as to verify the effectiveness of the pantograph-catenary simulation model in accordance with the identification flow for simulation model stipulated in standard of EN 50318,and on the basis of which,the paper analyzes the pantograph-catenary current collecting quality when there are changes of stiffness at registration points inside the whole overlap section and when there are changes of the stiffness only at the registration point in the overlap,obtains an optimized scheme for taking of stiffness value of a registration point after comparison.