A Theoretical Contact Mechanics Model of Machine Joint Interfaces Based on Fractal Theory

4th International Conference on Manufacturing and Industrial Technologies

机械制造;工业技术

Liu, Wenwei^1 ; Wang, Yuanhang^1 ; Li, Xiaobing^1 ; Huang, Chuangmian^1 ; Yang, Jianfeng^1 ; Pan, Guangze^1 ; Ding, Xiaojian^1

China Electronic Product Reliability and Environmental Testing Research Institute, No. 110, Dongguanzhuang Rd., Tianhe District, Guangzhou, Guangdong, China^1

关键词: Contact Mechanics;    Elastoplastic deformation;    Force displacement;    Fractal functions;    Hertz contact theory;    Machine joint interfaces;    Nonlinear relations;    Numerical calculation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/212/1/012015/pdf
DOI  :  10.1088/1757-899X/212/1/012015

学科分类：工业工程学

来源: IOP

【 摘 要 】

To obtain more accurate contact mechanics model of joint interfaces theoretically, A theoretical contact mechanics model of joint interfaces based on fractal theory was proposed. An improved 3D WM fractal function was used to characterize the contact surface, contact load and contact area equations of asperities in elastoplastic deformation regime were established, solutions for the relationships of area-displacement and force-displacement in the elastoplastic deformation regime was done based on Hertz contact theory and fractal theory, and the present model was proven to be effective by comparing the present model to other four classical contact models and test data. Furthermore, simulations and numerical calculation results reveal nonlinear relation between the influence factors and the contact area.