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建立了具有 35个自由度的三大件转向架货车系统通用非线性数学模型 ,可用于分析普通三大件转向架、侧架交叉支撑转向架、自导向和迫导向径向转向架货车的非线性动力学特性。模型充分考虑了轮轨相互作用关系及悬挂系统的非线性因素 ,运用数值分叉理论分析车辆系统的非线性运动稳定性 ,对各导向机构和交叉支撑机构对三大件转向架货车运动稳定性的影响分别进行了研究 ,同时对货车系统有可能出现的准周期解及混沌运动也进行了探讨
The general non-linear mathematical model of three-piece bogie truck system with 35 degrees of freedom is established, which can be used to analyze common three-piece bogie, side frame cross bracing bogie, self-steering and forced radial bogie truck Linear dynamic characteristics. The model takes full account of the wheel-rail interaction and the nonlinear factors of the suspension system, and uses the numerical bifurcation theory to analyze the nonlinear motion stability of the vehicle system. The stability of the truck with three guide frames and the cross support mechanism The effects of these factors are studied respectively, and the possible quasi-periodic solutions and chaos motions of the truck system are also discussed