轻工机械2025，Vol.43Issue(3)：47-54,8.DOI:10.3969/j.issn.1005-2895.2025.03.007
考虑多尺度影响的粗糙球面分形接触模型
Fractal Contact Model of Rough Spherical Surfaces Considering Multi-Scale Effects
摘要
Abstract
In order to improve the contact carrying capacity of bearing parts,a multi-scale spherical contact mechanics model was established by the research group.Firstly,the influence of frequency index on the elastic-plastic deformation stage was studied.Secondly,the improved asperity contact area distribution function was derived by associating the radius of curvature of the two spheres with the contact area distribution function.Finally,the effects of spherical curvature radius ratio,fractal parameters and frequency index on the total contact area and total contact load of the model were analyzed.The results show that the internal contact has a larger total contact area than the external contact,increasing the ratio of fractal dimension and spherical curvature radius can increase the total contact area of the two spheres.Increasing the material characteristic parameters and characteristic scale parameters lead to a decrease in the total contact area.The larger diameter of the asperity substrate,the greater contribution to the total contact area.关键词
轴承/分形理论/粗糙球面/频率指数/接触面积/接触载荷Key words
bearing/fractal theory/rough spherical surfaces/frequency index/contact area/contact load分类
机械制造引用本文复制引用
李后,陈剑,童泽腾,曹敏,朱林波,孙岩辉..考虑多尺度影响的粗糙球面分形接触模型[J].轻工机械,2025,43(3):47-54,8.基金项目
国家自然科学基金(52005381) （52005381）
陕西省自然科学基础研究计划(2022JQ-340). （2022JQ-340）
