滑块运动和形位参数对颗粒流润滑特性的影响规律

针对机械工程中的典型摩擦学研究对象-斜面滑块摩擦副,基于非连续介质力学的离散单元法建立非流态颗粒流润滑的模型.通过研究颗粒膜厚度、斜面倾角、运动速度三个运动和形位变量,探讨它们对承载分布、摩擦因数等的影响.同时以颗粒和多体接触点为对象,考察颗粒流润滑中平均接触力、体功、接触摩擦功和颗粒总动能的微观特性.研究认为颗粒流润滑承载量与滑块的倾角、速度成正比关系,与颗粒膜厚度成反比.颗粒流润滑的压力峰出现在楔形的入口区.适度减小斜面倾角和颗粒膜厚度,有利于减少摩擦.相对而言,滑块速度对摩擦因数的影响不大.

Influences of Several Slider's Parameters on Particles Flow Lubrication Characteristics

Aiming at the slider plane tribopairs which is a typical research object of tribology in mechanical engineering, the non-fluidized particles flow lubrication model is built on the basis of the discrete element method of non-continuum mechanics. The effects of the clearance, angle and speed of the slider on load capacity, load profile and friction coefficient are investigated. At the same time, taking particles and contact point as object, the micro-properties including average contact force, body energy, co...