Dynamical responses of the pantograph-catenary coupled system were studied in consideration vertical irregularities of contact wires. The dynamical model of the pantograph-catenary coupled system was established. The measured data of vertical irregularities of contact wires were introduced into the modal. Though simulation, the contact pressures between the pantograph and contact wires of vertical irregularities were obtained for different train speeds. The contact wire vertical irregularity PSD was worked out by using maximum entropy spectral estimation (MESE) based on the measured contact wire height data. The regularity of the contact wire heights was evaluated. The contact wire vertical irregularity samples corresponding to the same PSD were obtained and introduced into the pantograph-catenary coupled dynamical model. The statistics of contact pressures between the pantograph and the contact wires were deduced from simulations. The law of contact wire vertical irregularities affecting contact pressures was revealed. The numerical results show that the contact wire vertical irregularities have significant influence on the dynamics of the pantograph-catenary system.%建立弓网系统垂向耦合动力学模型,将接触线垂向不平顺实测数据引入该模型,仿真得到计及接触线垂向不平顺时不同速度条件下的弓网间接触压力值;以接触线垂向不平顺实测数据为基础,建立接触线垂向不平顺谱,对该线路的接触线垂向平顺状态进行评估;基于三角级数合成法得到一系列具有相同功率谱密度的接触线垂向不平顺样本,仿真分析得到弓网间接触压力的统计量.通过研究,揭示了接触线垂向不平顺对弓网间接触压力的影响规律.
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