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Velocity dependence of adhesive wear due to asperity plowing

文献类型：期刊论文

作者Du R(杜柔)1; Hu JQ(胡剑桥)1,2
刊名MATERIALS TODAY COMMUNICATIONS
出版日期2025-06-01
卷号46页码:8
关键词Adhesive wear Rate effect Asperity plowing Molecular dynamics Wear debris
DOI10.1016/j.mtcomm.2025.112614
通讯作者Hu, Jianqiao(jianqiaohu@imech.ac.cn)
英文摘要Adhesive wear at sliding contact interfaces is governed by the failure of microscale asperities, influenced by material properties, interfacial adhesion, and sliding velocity. This study investigates the velocity-dependent wear mechanisms at the asperity level using coarse-grained molecular dynamics simulations across a spectrum of materials with tunable adhesion potentials. Our results reveal two distinct regimes: 1) Plasticity-dominated regime. At lower velocities, asperity interactions primarily result in plastic smoothing, leading to a decrease in the wear rate with increasing velocity. This behavior arises due to velocity-dependent contact forces, which exert a stronger influence than the relatively weak velocity dependence of wear volumes. 2) Fracture-dominated regime. Beyond a critical velocity, localized fracture generates debris particles, causing wear volumes to surge and wear rates to increase by orders of magnitude. The transition between these regimes is driven by competition between strain rate hardening and inertial effects. These findings clarify the non-monotonic velocity dependence of wear rates in tribological systems and provide predictive criteria for mitigating wear in engineering applications.
分类号二类
WOS关键词DRY SLIDING WEAR ; MOLECULAR-DYNAMICS ; FRICTION ; BEHAVIOR
资助项目National Natural Science Foundation of China[12172358] ; Young Elite Scientists Sponsorship Program by CAST[2023QNRC001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0620101]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:001481797600001
资助机构National Natural Science Foundation of China ; Young Elite Scientists Sponsorship Program by CAST ; Strategic Priority Research Program of Chinese Academy of Sciences
其他责任者胡剑桥
源URL[http://dspace.imech.ac.cn/handle/311007/101175]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Du R,Hu JQ. Velocity dependence of adhesive wear due to asperity plowing[J]. MATERIALS TODAY COMMUNICATIONS,2025,46:8.
APA 杜柔,&胡剑桥.(2025).Velocity dependence of adhesive wear due to asperity plowing.MATERIALS TODAY COMMUNICATIONS,46,8.
MLA 杜柔,et al."Velocity dependence of adhesive wear due to asperity plowing".MATERIALS TODAY COMMUNICATIONS 46(2025):8.

入库方式： OAI收割

来源：力学研究所

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