Abstract
In order to understand the microscopic mechanism of the joint surface, simulations of three-dimensional microscopic topography of the joint surface are done based on the fractal theory. Further, the three-dimensional microscopic surface contact models of the joint surface are designed using the fractal simulation surface topography. Then, the contact simulation analyses are carried out using finite element method and the microscopic elasticity and elastic-plastic contact characteristics between the three-dimensional microscopic surfaces are studied. The research results showed that the displacement along normal direction, contact area, and contact pressure of the joint surface increase nonlinearly with an increase in the contact load and vary with the roughness of the joint surfaces. This study provides a theoretical basis for the further research on the microscopic mechanism of the joint surface.
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