接触网-受电弓系统摩擦振动的初步研究

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利用ABAQUS建立接触网和受电弓系统的有限元模型，对其进行运动稳定性的有限元复特征值分析，研究摩擦因数、升弓力矩以及承力索和接触线张力对弓网系统运动稳定性的影响。结果表明：随着摩擦因数μ的增大，系统的不稳定性增加；升弓力矩增大，弓网系统的不稳定性也增加；承力索和接触线的张力越大，弓网系统发生不稳定振动的趋势越大；当摩擦因数μ≥0．35时，系统出现模态耦合现象。 A finite element model of a pantograph-catenary system was established, and a complex eigenvalue analysis of the motion equations of the system was performed using ABAQUS. The effect of friction coefficient,lift force and tensions applied on the ends of the support line and contact line on the motion stability of the pantograph-catenary system was stud- ied. The results demonstrate that there are strong instability propensities when the friction coefficient μ is over a certain val-ue. Parameter sensitivity analyses show that friction coefficient, lift force, tensions applied on the ends of the support line and contact line have distinct influences on the motion stability of the pantograph-eatenary system. Mode coupling appears when μ≥0. 35 and the unstable mode shapes of the system were analyzed.