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Studies of Low-loading Micro-slip Contacts on Rough Surfaces with GW Model

机译:GW模型粗糙表面粗糙表面的低负载微滑触点研究

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摘要

Lateral loading and interfacial slip of multi-asperity (i.e., rough) elastic contacts are studied for micro-slip contact conditions. The Mindlin micro-slip model for smooth surfaces is generalized to rough surface contacts using the Greenwood-Williamson (GW) approach, and the general relations of lateral contact force and related stiffness are obtained. The method extends previous approaches by incorporating micro-slip, allowing application to rough surfaces and providing simple expressions for experimental analysis by use of the Greenwood-Williams roughness parameters. As applications, the numerical results of micro-slip contacts on rough surfaces for Gaussian and exponential asperity height distributions, respectively, are obtained based on the general relations of the extended model, and are compared and discussed for low load cases.
机译:研究了多齿性(即,粗糙)弹性触点的横向加载和界面滑动,用于微滑接触条件。 用于光滑表面的Mindlin微滑板模型是使用Greenwood-Williamson(GW)方法的粗糙表面触点,并且获得横向接触力和相关刚度的一般关系。 该方法通过掺入微滑件延伸先前的方法,允许应用于粗糙表面并通过使用Greenwood-Williams粗糙度参数提供实验分析的简单表达式。 作为应用,基于扩展模型的一般关系,获得了高斯和指数粗糙度高度分布的粗糙表面上的微滑触点的数值结果,并进行了比较和讨论的低负载箱。

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