...Haifeng Yu; Yao Wang; Chuang Gao Purpose This study aims to use fractal theory to investigate the contact mechanics of two bidirectional anisotropic surfaces, taking into account the friction coefficient of the contact interface. This study introduces a model that centers on normal contact load...

...Minglang Zhang; Xue Zuo; Yuankai Zhou Purpose The purpose of this paper is to reveal the dynamic contact characteristics of the slip ring. Dynamic contact resistance models considering wear and self-excited were established based on fractal theory. Design/methodology/approach The effects...

... and fractal theory. Then the torque and load bearing characteristics of the clutch are obtained, and the influences of the surface fractal features are investigated and discussed. Finally, the Weierstrass–Mandelbrot function is adopted for the surface topography characterization and evaluation. Findings...

...Xianguang Sun; Chunxiao Meng; Tiantang Duan Purpose The purpose of this study is to propose a fractal model of thermal contact conductance (TCC) of two spherical joint surfaces, considering friction coefficient based on the three-dimensional fractal theory. Design/methodology/approach...

.../methodology/approach Based on the revised fractal theory, considering the friction effect, the elastoplastic contact regime and the asperities interaction in a simple way, the total NCS among three disks of the rod-fastening rotor bearing system is established. Effects of fractal dimension and roughness...

... Discrete element method Friction and wear Fractal theory Wavelet analysis The frictional resistance between tire and road surface is of great importance for driving safety. Previous studies have clearly classified the irregularities of pavement textures as macro-texture (0.5–50mm) and micro...

... k_ept1 are expressed, respectively. Fractal theory Hertz contact theory Normal and tangential contact stiffness Asperity interaction D = fractal dimension; E = equivalent Young’s modulus; E₁, E₂ = Young’s moduli...

... dimension and G: fractal roughness). Originality/value The contact model of the cylindrical joints (conformal contact) with radial clearance is constructed by using the fractal theory and the Kogut-Etsion elastic-plastic contact model, which includes purely elastic, elastic-plastic and fully...