Normal stiffness and damping at lightly loaded rough planar contacts
Normal stiffness and damping at lightly loaded rough planar contacts
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DOI：
10.1016/j.triboint.2016.01.007
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发表时间：
2016-08-01
影响因子：
6.2
通讯作者：
Serpe, Catalin I.
中科院分区：
文献类型：
--
作者：
Soom, Andres;Serpe, Catalin I.
粗糙表面之间接触的两个特征是粗糙表面之间的局部相互作用和缝隙中空气的存在。这会产生接触顺应性、静态和局部特性，以及当触点振动时，由于挤压空气膜而产生的机械阻尼。我们考察了主要在弹性接触中清洁表面和在弹塑性接触中两种新磨损表面的刚度特性。挤压油膜阻尼可以与表面之间的平均间隙有关。并将实验结果与分析模型进行了比较。我们可以从格林伍德-威廉姆森(1996)[1]的论文中获得对刚性和缺口的定性和定量的洞察，我们在这次研讨会上对该论文给予了表彰。(C)2016爱思唯尔有限公司。保留所有权利。
Two features of contact between rough surfaces are localized interactions between asperities and the presence of air in the gap. This gives rise to a contact compliance, a static and local property and, when contacts vibrate, mechanical damping due to squeeze films of air. We examine the stiffness characteristics of clean surfaces in primarily elastic contact and both new worn surfaces in elasto-plastic contact. The squeeze-film damping can be related to the average gap between the surfaces. Experimental results are compared with analytical models. Qualitative and quantitative insight into both the stiffness and the gap can be obtained from the Greenwood-Williamson (1996) [1] paper that we are honoring at this symposium. (C) 2016 Elsevier Ltd. All rights reserved.