机械与电子2017，Vol.35Issue(10)：7-11,5.
基于分形理论的结合面微观接触特性分析
Analysis of Micro-contact Characteristics of Joint Surface Based on Fractal Theory
摘要
Abstract
In order to study the micro-contact characteristics,a rough surface model based on fractal theory is presented to research the coupling mechanism of the approaching contact surfaces.The simulated analysis of the contact between a rough surface and a smooth surface was performed,which showed the influence mechanism of fractal dimension,surface roughness and displacement load on the micro-contact process.Then,a method for detecting the contact of rough surfaces based on the laser surface acoustic wave was proposed and verified through experiments.The results show that the morphology of the asperity is the decisive factor for the mechanical contact performance;the real contact area is much smaller than the nominal one.In engineering fields,the calculation of the bearing capacity using the nominal contact area will have a large deviation from the actual situation.关键词
分形理论/粗糙结合面/数值模拟/真实接触面积/激光超声Key words
fractal theory/rough surfaces/numerical simulation/real contact area/laser ultrasound分类
矿业与冶金引用本文复制引用
孙钧成,何博侠,杨雨诗,韩阳..基于分形理论的结合面微观接触特性分析[J].机械与电子,2017,35(10):7-11,5.基金项目
国家自然科学基金面上项目(51175267) （51175267）
国家自然科学基金资助项目(51575281) （51575281）
