重庆科技学院学报（自然科学版）2018，Vol.20Issue(2)：83-86,4.
膜厚对粉末润滑层特性影响的试验研究
Theoretical Analysis About Effect of Film Thickness on Powder Lubrication Characteristics
摘要
Abstract
Real contact area ratio is used to quantitatively characterize the destruction process of powder layer,and three dimensional model is adopted to analyze the distribution of bearing and friction under different film thickness. The results show that when film thickness is smaller,the bearing capacity is smaller and bearing peak is less;be-cause of uneven bearing,the load concentration occurs easily. Due to serious local damage of the powder layer,re-al contact area ratio drops quickly. When the thickness of the film is large,the shear force is uniform and the bear-ing capacity increases with more bearing peaks. No serious damage to the powder layer,lubrication effect is good. Large thickness of film brings the larger shear force,which means there is local destruction of the powder layer. Af-ter the powder layer is partially destructed,the relative slip between upper and lower specimens exists. The powder layer with larger shear force is rapidly destructed. Diffusion of partial area rapidly increases and the real contact ar-ea ratio declines fast.关键词
粉末润滑/真实接触面积比/膜厚/承载Key words
powder lubrication/real contact area ratio/film thickness/load分类
机械制造引用本文复制引用
孔俊超,钱森森,吴海兵,章涛,徐罡,桂栉强..膜厚对粉末润滑层特性影响的试验研究[J].重庆科技学院学报（自然科学版）,2018,20(2):83-86,4.基金项目
清华大学摩擦学国家重点实验室开放基金重点项目"颗粒介质混合润滑界面的介尺度行为研究"(SKLTKF13A02) （SKLTKF13A02）
巢湖学院校级项目"基于韦森堡效应流体输送的微笔直写行为与调控"(XLY-201702) （XLY-201702）
