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A revised elastic-plastic contact model of cycloidal pinwheel based on length scale
Yongqiang Wang1, Bingyang Wei1,2, Zhen Wang3,4
1School of Mechanical and Electronic Engineering, Henan University of Science and Technology, Luoyang, 471003, People's Republic of China.
Abstract:
This study explores the relationship between surface roughness and characteristic scale through theoretical analyses and experimental data. Considering the concavity and convexity of cycloidal gear tooth profile curvatures, a curved surface contact coefficient model suitable for both inner and outer contacts, with either equal or unequal curvatures, has been developed. Moreover, a fractal contact model is constructed for cycloidal pinwheels. This model considers scale correlation and analyzes the influence of microscopic parameters on the elastic-plastic critical grade and the behavior of the contact area. Additionally, the influence of the micro-convex body frequency index on surface contact performance is explored to provide theoretical insights for improving the elastic contact ratio and reducing wear on contact surfaces.
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