A complete track-vehicle-pantograph-catenary (TVPC) coupling dynamics model is presented and several elaborate simulation cases are set to analyse the effect of vehicle body vibration on the pantograph-catenary system (PACS). The catenary is described by a finite-element model while the pantograph, vehicle and track are described by a multi-body model. In addition, different track irregularities are introduced to mimic real track conditions. Through Pearson correlation coefficient and spectrum analysis, the key kinematics parameters are identified, which influence both roof vibration and current collection quality. Frequency response of the TVPC shows that the forces between wheel and rail caused by track irregularities are transmitted to the bogie frame and vehicle body through primary and secondary suspension system, and finally to the PACS. Applying a series of excitation to the pantograph base frame and simulating the interaction between the PACS, the mechanism that the vehicle roof vibration affecting the PACS interaction is verified. Specifically, characteristic frequencies of the vertical displacement of the roof, which are related to the antiresonance and anti-phaseresponse of the pantograph, together with their corresponding amplitudes can be utilised to assess the influence of the body vibration caused by track irregularity on the current collection quality of PACS.

提出了完整的轨道-车辆-受电弓-悬链线（TVPC）耦合动力学模型，并设置了几个精心设计的仿真案例来分析车身振动对受电弓-悬链线系统（PACS）的影响。悬链线采用有限元模型描述，受电弓、车辆和轨道采用多体模型描述。此外，还引入了不同的轨道不规则性来模拟真实的轨道条件。通过皮尔逊相关系数和频谱分析，确定了影响屋顶振动和集流质量的关键运动学参数。TVPC 的频率响应表明，由轨道不平顺引起的轮轨之间的力通过主、副悬架系统传递到转向架和车身，最终传递到 PACS。对受电弓基架施加一系列激励，模拟PACS之间的相互作用，验证了车顶振动影响PACS相互作用的机理。具体而言，屋顶垂直位移的特征频率与受电弓的反共振和反相位响应有关，并结合其相应的振幅，可用于评估轨道不规则引起的车身振动对电流收集的影响。 PACS 的质量。