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

Authors: Xiaopeng Li; Ze Wang; Xue Wang; Jiasheng Li

Addresses: School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China ' School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China

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.

DOI: 10.1504/IJISE.2019.099775

International Journal of Industrial and Systems Engineering, 2019 Vol.32 No.1, pp.32 - 55

Accepted: 26 Aug 2017
Published online: 22 May 2019 *

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