{"title":"A Multi-Scale Contact Model for Rough Surfaces Under Loading and Unloading Conditions","authors":"Xuerui Zhang, Hongda Shen, Fuli Zhang, Guorui Zhang, Huanxiong Xia, Jianhua Liu, Xiaohui Ao, Juncheng Luo, Xuedong Zhu, Jian Zhang, Xiaohu Wu","doi":"10.1007/s11249-025-02005-z","DOIUrl":null,"url":null,"abstract":"<div><p>The contact of rough surfaces is a fundamental issue in analyzing friction, wear, and assembly of two parts. This study developed a multi-scale contact model for rough surfaces. Shoulder-shoulder elastoplastic contact, substrate deformation, and asperity interaction were considered in the asperity scale. A fractal representation was introduced to the contact model in the rough-surface scale, where the critical length scale and critical contact area were determined in the asperity scale. The proposed contact model was validated through comparisons with experimental data, simulation results, and other analytical models. Then, the effects of the surface topography, material properties, and largest length scale on rough-surface contact were examined, and the difference between the shoulder-shoulder and tip-tip contact modes was clarified.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"73 2","pages":""},"PeriodicalIF":2.9000,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tribology Letters","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11249-025-02005-z","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The contact of rough surfaces is a fundamental issue in analyzing friction, wear, and assembly of two parts. This study developed a multi-scale contact model for rough surfaces. Shoulder-shoulder elastoplastic contact, substrate deformation, and asperity interaction were considered in the asperity scale. A fractal representation was introduced to the contact model in the rough-surface scale, where the critical length scale and critical contact area were determined in the asperity scale. The proposed contact model was validated through comparisons with experimental data, simulation results, and other analytical models. Then, the effects of the surface topography, material properties, and largest length scale on rough-surface contact were examined, and the difference between the shoulder-shoulder and tip-tip contact modes was clarified.
期刊介绍：
Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.
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