关键词: 承载量, 多体接触, 粉末, 颗粒流

Abstract: 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, contact friction energy and particle kinetic energy of particle flow lubrication are studied. The results show that the total load capacity is directly proportional to the slider angle and speed, and is inversely proportional to friction clearance. Appropriate decrease of slider angle and clearance is advantageous to frictional characteristics, and the variation of slide speed has relatively small effects on friction coefficient.

Key words: Load capacity, Multi-body contact, Particle flow, Powder