Frictional Energy Dissipation in Wavy Surfaces
Frictional Energy Dissipation in Wavy Surfaces
复制标题
波状表面的摩擦能量耗散
DOI：
10.1115/1.4034461
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Eriten
中科院分区：
文献类型：
--
作者：
Lejie Liu;M. Eriten
摩擦阻尼的准确估计和调整对组合结构的合理设计、安全性和可靠性至关重要。在这项研究中，我们研究了表面几何形状和边界条件如何影响微滑移接触情况下的摩擦能量耗散。特别地，我们研究了二维（2D）可变形波浪表面在特定法向和切向载荷下与刚性板接触的摩擦损失。我们还提出了一种由复合材料表面张力引起的起皱引起的耗散调谐机制。这个表面是由硬条印刷在一个柔顺的基板上。研究表明，复合材料表面的拉伸载荷和设计可以显著改变起皱表面的接触几何形状。据此，我们提出了摩擦耗散图作为外加张力和复合材料设计几何参数之一的函数；硬条之间的间距。这些图说明了褶皱表面的耗散调谐能力，从而提出了一种独特的阻尼控制方法。(DOI: 10.1115/1.4034461)
Accurate estimation and tuning of frictional damping are critical for proper design, safety, and reliability of assembled structures. In this study, we investigate how surface geometry and boundary conditions affect frictional energy dissipation under microslip contact situations. In particular, we investigate the frictional losses of a two-dimensional (2D) deformable wavy surface in contact with rigid plate under specific normal and tangential loading. We also propose a dissipation tuning mechanism by tension-induced wrinkling of a composite surface. This surface is made of stiff strips printed on a compli- ant substrate. We show that the contact geometry of wrinkling surfaces can be altered significantly by tensile loading and design of the composite surface. Using this, we pres- ent frictional dissipation maps as functions of applied tension and one of the geometric parameters in the composite design; spacing between stiff strips. Those maps illustrate the dissipation tuning capability of wrinkled surfaces, and thus present a unique mean of damping control. [DOI: 10.1115/1.4034461]
影响因子：
2.5
作者：
Dini, D.;Hills, D. A.
通讯作者：
Hills, D. A.