{"title":"通过改变压头的几何形状来控制触点的摩擦系数和粘附特性","authors":"I. Lyashenko, Thao H. Pham, V. L. Popov","doi":"10.3390/pr12061209","DOIUrl":null,"url":null,"abstract":"In the present paper, we describe a series of laboratory experiments on the friction between rigid indenters with different geometrical forms and an elastic sheet of elastomer as a function of the normal load. We show that the law of friction can be controlled by the shape of the surface profile. Since the formulation of the adhesive theory of friction by Bowden and Tabor, it is widely accepted and confirmed by experimental evidence that the friction force is roughly proportional to the real contact area. This means that producing surfaces with a desired dependence of the real contact area on the normal force will allow to “design the law of friction”. However, the real contact area in question is that during sliding and differs from that at the pure normal contact. Our experimental studies show that for indenters having a power law profile f(r) = cnrn with an index n < 1, the system exhibits a constant friction coefficient, which, however, is different for different values of n. This opens possibilities for creating surfaces with a predefined coefficient of friction.","PeriodicalId":506892,"journal":{"name":"Processes","volume":"20 7","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Controlling the Friction Coefficient and Adhesive Properties of a Contact by Varying the Indenter Geometry\",\"authors\":\"I. Lyashenko, Thao H. Pham, V. L. Popov\",\"doi\":\"10.3390/pr12061209\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In the present paper, we describe a series of laboratory experiments on the friction between rigid indenters with different geometrical forms and an elastic sheet of elastomer as a function of the normal load. We show that the law of friction can be controlled by the shape of the surface profile. Since the formulation of the adhesive theory of friction by Bowden and Tabor, it is widely accepted and confirmed by experimental evidence that the friction force is roughly proportional to the real contact area. This means that producing surfaces with a desired dependence of the real contact area on the normal force will allow to “design the law of friction”. However, the real contact area in question is that during sliding and differs from that at the pure normal contact. Our experimental studies show that for indenters having a power law profile f(r) = cnrn with an index n < 1, the system exhibits a constant friction coefficient, which, however, is different for different values of n. This opens possibilities for creating surfaces with a predefined coefficient of friction.\",\"PeriodicalId\":506892,\"journal\":{\"name\":\"Processes\",\"volume\":\"20 7\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-06-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Processes\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3390/pr12061209\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Processes","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/pr12061209","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
在本文中,我们介绍了一系列关于不同几何形状的刚性压头与弹性橡胶板之间的摩擦力随法向载荷变化的实验室实验。我们的实验表明,摩擦规律可以由表面轮廓的形状来控制。自鲍登和塔伯提出粘合摩擦理论以来,摩擦力与实际接触面积大致成正比的观点已被广泛接受并得到实验证实。这就意味着,生产出实际接触面积与法向力成正比的表面,就可以 "设计摩擦定律"。然而,实际接触面积是指滑动时的接触面积,与纯法向力接触时的接触面积不同。我们的实验研究表明,对于具有幂律轮廓 f(r) = cnrn 且指数 n < 1 的压头,系统会表现出恒定的摩擦系数,但不同的 n 值会产生不同的摩擦系数。这为创造具有预定摩擦系数的表面提供了可能性。
Controlling the Friction Coefficient and Adhesive Properties of a Contact by Varying the Indenter Geometry
In the present paper, we describe a series of laboratory experiments on the friction between rigid indenters with different geometrical forms and an elastic sheet of elastomer as a function of the normal load. We show that the law of friction can be controlled by the shape of the surface profile. Since the formulation of the adhesive theory of friction by Bowden and Tabor, it is widely accepted and confirmed by experimental evidence that the friction force is roughly proportional to the real contact area. This means that producing surfaces with a desired dependence of the real contact area on the normal force will allow to “design the law of friction”. However, the real contact area in question is that during sliding and differs from that at the pure normal contact. Our experimental studies show that for indenters having a power law profile f(r) = cnrn with an index n < 1, the system exhibits a constant friction coefficient, which, however, is different for different values of n. This opens possibilities for creating surfaces with a predefined coefficient of friction.