Transition between Friction Modes in Adhesive Contacts of a Hard Indenter and a Soft Elastomer: An Experiment

IF 3.1 3区工程技术 Q2 ENGINEERING, MECHANICAL

Lubricants Pub Date : 2024-03-28 DOI:10.3390/lubricants12040110

I. Lyashenko, Thao H. Pham, Valentin L. Popov

引用次数: 0

Abstract

The tangential adhesive contact (friction) between a rigid steel indenter and a soft elastomer at shallow indentation depths, where the contact exists mainly due to adhesion, is investigated experimentally. The dependencies of friction force, contact area, average tangential stresses, and the coordinates of the front and back edges of the contact boundary on the indenter displacement are studied. It is found that first a stick–slip mode of friction is established, which is then replaced by another, more complex mode where the phase of a global slip of the elastomer on the indenter surface is absent. In both regimes, the evolutions of friction force and contact area are analyzed in detail.

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硬压头与软弹性体粘合接触中摩擦模式的转变：实验

实验研究了刚性钢压头与软弹性体之间在浅压痕深度下的切向粘着接触（摩擦），这种接触主要是由于粘着而存在的。研究了摩擦力、接触面积、平均切向应力以及接触边界前后边缘坐标对压头位移的影响。研究发现，首先建立的是一种粘滑摩擦模式，然后被另一种更复杂的模式所取代，在这种模式下，弹性体在压头表面上的整体滑移阶段不存在。在这两种情况下，摩擦力和接触面积的变化都得到了详细分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Lubricants Engineering-Mechanical Engineering

CiteScore

3.60

自引率

25.70%

发文量

293

审稿时长

11 weeks

期刊介绍： This journal is dedicated to the field of Tribology and closely related disciplines. This includes the fundamentals of the following topics: -Lubrication, comprising hydrostatics, hydrodynamics, elastohydrodynamics, mixed and boundary regimes of lubrication -Friction, comprising viscous shear, Newtonian and non-Newtonian traction, boundary friction -Wear, including adhesion, abrasion, tribo-corrosion, scuffing and scoring -Cavitation and erosion -Sub-surface stressing, fatigue spalling, pitting, micro-pitting -Contact Mechanics: elasticity, elasto-plasticity, adhesion, viscoelasticity, poroelasticity, coatings and solid lubricants, layered bonded and unbonded solids -Surface Science: topography, tribo-film formation, lubricant–surface combination, surface texturing, micro-hydrodynamics, micro-elastohydrodynamics -Rheology: Newtonian, non-Newtonian fluids, dilatants, pseudo-plastics, thixotropy, shear thinning -Physical chemistry of lubricants, boundary active species, adsorption, bonding