Friction Thermal-structural Analysis Of Elastoplastic Contact For Smooth Disk/Rough Pad

This paper developed a research on frictional thermodynamics and kinetics of the engineering rough surface in microscopic point of view. Based on the summarizes of characterization and contact model of rough surfaces, the thermal-mechanical coupling research situation, heat generated rule and heat transfer law between two contact surfaces, an analysis model for elastoplastic contact study was developed.Applying Weierstrass-Mandelbrot fractal functions, a dynamic model was established and analyzed with ABAQUS, which dealt with the coupling of stress and rotating frictional heat in the contact between rough pad with fractal characteristic and an ideal plain. In the process of numerical calculation, many aspects were considered, such as model established rules, impacts of grid cell, elastoplastic deformation, the coupling problems of the variation of temperature and pressure on contact surfaces.Through the coupled analysis, several problems were studied——-the distribution of temperature/contact pressure/stress field; the varieties, which caused by different loads and rotational velocities, of contact point’s number, non-dimensional contact area, amplitude and position of maximum temperature, maximum contact pressure, and maximum stress. Especially, the independent heat resource was studied in detail, which shows more reality engineering process and profound reveals the coupling of temperature/pressure/stress and the effects on real contact area.The result of this paper directs readers to further research on the thermodynamic of friction and the wear mechanisms of the rough surfaces.