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对于采用钢套橡胶轮的新型轻轨列车,其轮轨之间的力学行为有别于钢轮-钢轨、汽车轮胎-地面的力学行为。运用Ansys有限元程序,采用柔-刚面接触单元,模拟新型车轮与刚性钢轨之间的接触问题,分析轮缘橡胶的变形规律,建立橡胶变形与作用荷载之间的函数关系。引入等效刚度系数,将轮缘橡胶等效为三向弹簧,简化新型轻轨列车系统的力学模型。
For a new type of light rail train with steel rubber sleeves, the mechanical behavior between the wheel and rail is different from the mechanical behavior of steel wheels, rails and automobile tires. The Ansys finite element program was used to simulate the contact between a new type of wheel and a rigid rail using the soft-rigid-faced contact element. The deformation law of the rim rubber was analyzed, and the functional relationship between rubber deformation and acting load was established. Introducing the equivalent stiffness coefficient, the rim rubber is equivalent to a three-way spring, which simplifies the mechanical model of the new light rail train system.