Research on static friction coefficient of joint surfaces considering elastic-plastic deformation based on fractal model

Xiaopeng Li, Ze Wang, Xue Wang and Jiasheng Li

International Journal of Industrial and Systems Engineering, 2019, vol. 32, issue 1, 32-55

Abstract: In order to study the influence of the microscopic morphology on joint surfaces, it is necessary to consider the elastic-plastic deformation of micro-bulge. Based on the M-B fractal model, the contact fractal models of static friction coefficient with the elastic-plastic deformation considered and not considered are established respectively. Then the models are analysed by changing different characteristic parameters, and the nonlinear relationships between static friction coefficient and characteristic parameters of joint surfaces are revealed. The results show that the static friction coefficient is increased with the normal load and material parameters increase and decreased with the fractal scale parameter increases. And the static friction coefficient is first increased and then decreased with the fractal dimension increase. The static friction coefficients considering elastic-plastic deformation and not are compared. The comparison result reveals that the elastic-plastic deformation has influence on static friction coefficient.

Keywords: joint surfaces; elastic-plastic deformation; static friction coefficient; fractal theory; the nonlinear relationships. (search for similar items in EconPapers)
Date: 2019
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