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以非线性有限元法和多体动力学理论为理论基础,通过采用考虑剪切变形的二维梁单元的绝对节点坐标方程来描述钢丝绳的柔性变形,借助于单元节点相对于摩擦轮的线-线接触方法,建立了摩擦提升机摩擦传动系统的多点动态接触动力学模型。研究表明,构建的摩擦提升机多点接触动力学计算模型由于综合考虑了钢丝绳的柔性体效应、钢丝绳与摩擦轮之间的动态接触、摩擦轮转速、摩擦系数等因素的影响,为分析摩擦提升机提升过程中,摩擦接触处钢丝绳的接触力、张力、滑动、接触等摩擦传动特征提供了一个有效的研究工具。
Based on the nonlinear finite element method and the multi-body dynamics theory, the flexible deformation of the wire rope is described by using the absolute node coordinate equation of the two-dimensional beam element considering the shear deformation. By means of the element- Line contact method, a multi-point dynamic contact dynamic model of friction hoist friction transmission system is established. The research shows that the multi-point contact kinetic model of the friction hoist can be used to analyze the influence of the friction increase due to the flexible body effect of the wire rope, the dynamic contact between the wire rope and the friction wheel, the rotational speed of the friction wheel and the friction coefficient, Machine lifting process, friction contact with the rope contact force, tension, sliding, contact and other friction transmission features provide an effective research tool.