机械科学与技术2017，Vol.36Issue(12)：1823-1829,7.DOI:10.13433/j.cnki.1003-8728.2017.1204
液压缸活塞表面微织构动压润滑性能分析
Analysis on Hydrodynamic Lubrication Performance of Micro-texture on Hydraulic Cylinder Piston Surface
摘要
Abstract
The paper was on the background of the textured cylinder clearance seal.The average Reynolds equation was used in the micro-texture flow field for mathematical modeling.The finite difference method was used to discrete the average Reynolds equation.There are six morphologies such as hemispherical surface,cylinder,paraboloid,six-sided cube and micro-textured simulated for getting optimal micro-textured appearance.The effects of the surface roughness,surface orientation parameters and area occupancy rate on the surface friction coefficient are explored.The results show that six different morphologies can produce hydrodynamic lubrication on the surface of the piston.The hydrodynamic lubrication performance of the cylinder is the best.The rough surface asperities can form dynamic pressure bearing force during exercise.The cylindrical surface friction coefficient increases with the roughness.The micro-texture coefficient of friction decreases with the increase of surface direction parameters,area occupancy rate.关键词
液压缸/微织构/平均Reynolds方程/粗糙度Key words
hydraulic cylinder/micro-texture/average Reynolds equation/roughness分类
机械制造引用本文复制引用
余广,曾良才,毛阳,湛从昌,卢艳..液压缸活塞表面微织构动压润滑性能分析[J].机械科学与技术,2017,36(12):1823-1829,7.基金项目
国家自然科学基金项目(51475338)与国家青年科学基金项目(51405350)资助 （51475338）
