A novel physics-based modeling approach for tangential fretting contact behavior of jointed interface considering multi-scale effects

Author:

Zhu Linbo1ORCID,Liu Di2,Chen Jian2ORCID,Liu Junbing3

Affiliation:

1. School of Chemical Engineering and Technology, Xi’an Jiaotong University 1 , Xi’an 710049, People’s Republic of China

2. School of Mechanical and Electrical Engineering, Xi’an Polytechnic University 2 , Xi’an 710048, People’s Republic of China

3. Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi’an Jiaotong University 3 , Xi’an 710049, People’s Republic of China

Abstract

A novel physics-based constitutive model has been developed to map the tangential fretting behavior of joint surfaces. The model integrates the fractal normal contact model, which considers multi-scale effects, and the Iwan model through the Coulomb friction law. In this model, a new distribution of yield force is proposed for Jenkins elements, which is determined by fractal topography and material parameters and related to the scale of asperity. The effects of fractal topography, material parameters, and the normal load applied to the joint surface on the tangential responses such as tangential force, tangential stiffness, energy dissipation, and the distribution of yield force have been discussed. It has been found that the fractal parameters D and G have opposite effects on the tangential responses and yield force distribution.

Funder

National Natural Science Foundation of China

Fundamental Research Funds for the Central Universities

Publisher

AIP Publishing

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