液压与气动Issue(6)：14-19,6.DOI:10.11832/j.issn.1000-4858.2018.06.003
基于椭圆织构优化的间隙密封液压缸摩擦性能研究
Friction Performance of Gap Seal Hydraulic Cylinder Based on Optimization of Elliptical Texture
摘要
Abstract
We construct the elliptical micro-texture topography on inner wall of cylinder by taking a gap-sealed servo-hydraulic cylinder as the object,considering variability and complexity of the influence of texture parameters on surface properties of components.The influence of simultaneous changes of elliptical shape parameters,such as axial length ratio,ellipticity and area occupancy on dynamic pressure lubrication and friction performance of cylinder surface is studied by circular iteration method.Meanwhile,the influence of gap between cylinder and piston and piston velocity on friction characteristics of textured surface is further analyzed after obtaining the optimal elliptical parameters.The results show that the radius of elliptical textured morphology has a dominant interval,that is a ∈ [0.43,0.46] mm and b ∈ [0.29,0.32] mm,which results in the maximum hydrodynamic pressure and the optimum lubrication characteristics on cylinder surface;an optimal gap value of 2 μm makes the maximum bearing capacity on textured surface;piston velocity has little influence on friction performance of cylinder surface.关键词
椭圆织构/间隙密封/动压润滑/摩擦性能/织构优化Key words
elliptical texture/gap seal/hydrodynamic lubrication/friction performance/texture optimization分类
机械制造引用本文复制引用
陈小兰,曾良才,陈晓波,吴振鹏..基于椭圆织构优化的间隙密封液压缸摩擦性能研究[J].液压与气动,2018,(6):14-19,6.基金项目
国家自然科学基金(51475338,51705377) （51475338,51705377）
