Research on static friction coefficient of joint surfaces considering elastic-plastic deformation based on fractal model
by Xiaopeng Li; Ze Wang; Xue Wang; Jiasheng Li
International Journal of Industrial and Systems Engineering (IJISE), Vol. 32, No. 1, 2019

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.

Online publication date: Wed, 22-May-2019

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