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首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >Study of Microcontact Model for Hard Particles Between Rough Surfaces
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Study of Microcontact Model for Hard Particles Between Rough Surfaces

机译：粗糙表面之间硬颗粒的微接触模型研究

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摘要

Particles are often presented at contact interfaces. In this study, a three-body microcontact model Considering of hard particles and rough surfaces is proposed in order to understand the effects of particles between surfaces on contact characteristics. Both transitional surface-to-surface and particle-to-surface two-body microcontact simulations can be obtained according to the simplification of this model. In the three-body contact situation, the curves of contact area ratio versus dimensionless load are located in the range between two straight lines. The surface-to-surface two-body contact situation is the upper bound and the particle-to-surface two-body contact situation is the lower bound. The contact situation will approach to the pure particle-to-surface two-body contact situation as the value of particle diameter over roughness value of surface increases. The total contact area ratio increases when particle size or particles density decreases, and contact load increases. Contrary to the results for contact area ratio, the dimensionless separation increases when particle density increases or contact load decreases.
机译：粒子通常出现在接触界面上。在这项研究中，提出了一种考虑到硬颗粒和粗糙表面的三体微接触模型，以了解表面之间的颗粒对接触特性的影响。根据该模型的简化，可以获得过渡的表面到表面和粒子到表面的两体微接触仿真。在三体接触情况下，接触面积比与无量纲载荷的曲线位于两条直线之间的范围内。表面对表面的两体接触情况是上限，而颗粒对表面的两体接触情况是下限。随着粒径的值相对于表面的粗糙度值的增加，接触情况将接近纯粒子对表面的两体接触情况。当颗粒尺寸或颗粒密度减小时，总接触面积比增加，并且接触负荷增加。与接触面积比的结果相反，当颗粒密度增加或接触负荷降低时，无因次分离增加。

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