针对城市轨道交通弓网系统,为研究各种受电弓、接触网仿真模型的适用性,建立了受电弓的归算质量模型、多刚体模型和刚性接触网的等效梁结构模型、变刚度弹簧模型.组合不同的受电弓与接触网模型,通过弓网耦合系统动力学仿真,得到弓网系统的动力学性能.研究结果表明:在低速运行条件下,不同受电弓模型匹配同一接触网时受流性能差别不大,不同模型间接触力标准差变动范围不超过10 N;随着速度的提升,不同模型的受流性能差异渐趋明显,各模型接触力标准差变化超过80 N;当与跨距通过频率及其倍频相匹配的弓网系统固有频率、振型不同时,各受电弓模型受流性能发生变化,速度拐点出现;仿真结果和试验数据对比分析进一步表明,由于考虑了上框架的弹性贡献,受电弓三质量模型有更好的适应性.%In order to analyze the applicability of pantographs and catneary models to the urban railway system,the pantograph was modeled as a lumped parameter system with two or three degrees of freedom and a multi-rigid model,while the rigid catenary was simplified as a beam model and a spring model with different stiffnesses.Combining different pantographs and catenary models,the dynamics simulation of the coupled system model was conducted to obtain the dynamic performance of the pantograph-catenary system.The results show that at low speeds,different catenary models with the same pantograph show a little difference in current collection,and the standard deviation of contact force is less than 10 N.With the increase of speed,the difference of models become evident,and the standard deviation of contact force varies beyond 80 N.When the natural frequency and mode shape of pantograph and catenary that match the span-pass frequency exhibit a discrepancy between different models,there appears a critical speed where current collection performance of models changes dramatically.By comparing the simulation and experimental results,it is indicated that the three-lumped-mass model of pantograph is more applicable than the other kinds of models,because it takes into account the elasticity of pantograph upper frame.
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