表面粗糙度和涂层在接触相互作用中的综合效应建模

IF 3.1 3区 工程技术 Q2 ENGINEERING, MECHANICAL
I. Goryacheva, Anastasiya Yakovenko
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引用次数: 0

摘要

本文建立了表面粗糙的球形冲头压入弹性半空间上的弹性薄层的模型。提出了基于双尺度方法的数值分析解决方案。在宏观尺度上,考虑到表面层厚度及其机械特性,以及由微观尺度分析计算得出的表面粗糙度引起的附加顺应性,将第二类积分方程简化为计算名义接触特性。分析了冲头粗糙度、表面层机械和几何特性对名义接触压力分布、名义接触面积和压痕深度以及实际接触面积和单个接触点压力的影响。所建立的接触模型可用于分析冲头对分层弹性基底的压痕,同时考虑到冲头表面的粗糙度,也可用于全面分析粗糙度对两种尺度下接触过程的影响。其结果可用于控制粗糙涂层体的压痕。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modeling of the Combined Effect of the Surface Roughness and Coatings in Contact Interaction
The model of indentation of a spherical punch with a rough surface into a thin elastic layer lying on an elastic half-space has been developed. A numerical-analytical solution is suggested based on the two-scales approach. At macroscale, the integral equation of the second kind is reduced to calculate the nominal contact characteristics, taking into account the surface layer thickness and its mechanical characteristics, as well as additional compliance due to surface roughness calculated from the microscale analysis. The influence of the punch roughness and the surface layer mechanical and geometrical characteristics on the nominal contact pressure distribution, on the nominal contact area and the indentation depth, as well as on the real contact area and pressures at the individual contact spots, is analyzed. The developed contact model can be used to analyze the indentation of the punch into the layered elastic base, taking into account the roughness of the punch surface, and can also be used to give a complete analysis of the roughness effect on the contact process at both scale levels. The results can be used to control the indentation of the rough-coated bodies.
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来源期刊
Lubricants
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
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