The model optimization and solving of the pantograph-catenary system on electrified railway were researched.And the influence of contact wire pre-sag on current-collecting of pantograph-catenary system was analyzed.In this paper,the motion equations were given,treating the catenary as a system with stiffness changing constantly and combining with the pantograph system.Newmark method was used to solve the equations.According to above method,the simulation model of the pantograph-catenary system was established with ANSYS software.The influence of the contact wire pre-sag on current-collecting quality of pantograph-eatenary system was discussed.The simulation results are in accord with actual requirement,and can provide some reference for the design of cate%研究电气化铁路受电弓一接触网结构系统优化建模问题,分析了接触线预弛度对弓网受流的影响.传统的弓网模型多采用模态振型叠加法进行求解,过程比较繁琐,且容易引起截断误差.针对上述问题,将接触网看作一个刚度不断变化的系统,与受电弓系统联立,给出了弓网运动方程,并提出采用Newmark方法进行直接积分求解.根据上述方法,使用ANSYS软件建立了弓网仿真模型,分析了预弛度对弓网受流质量的影响.仿真结果能够满足实际要求,可为接触网的设计提供参考.
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