论文标题
各向同性和各向异性，随机粗糙表面的弹性接触中的渗透和雷诺在
Percolation and Reynolds flow in elastic contacts of isotropic and anisotropic, randomly rough surface
论文作者
论文摘要
在这项工作中，我们在数值上研究各向同性，各向异性，刚性，随机粗糙的表面和线性弹性反面之间的弹性接触，以及随后的雷诺在两个接触固体之间的间隙流过。当Peklenik数字指示各向异性时，我们发现渗透阈值取决于流体流动方向，除非系统尺寸明显超过平行于易于流动方向的滚动波长。确认了0.415附近的关键接触区域。启发式校正的有效中等处理可令人满意地提供雷诺流体流量电导，例如，对于各向同性粗糙度，我们确定了准确的闭合表达式，这仅取决于平均间隙和相对接触面积。
In this work, we numerically study the elastic contact between isotropic and anisotropic, rigid, randomly rough surfaces and linearly elastic counterfaces as well as the subsequent Reynolds flow through the gap between the two contacting solids. We find the percolation threshold to depend on the fluid-flow direction when the Peklenik number indicates anisotropy unless the system size clearly exceeds the roll-off wave length parallel to the easy flow direction. A critical contact area near 0.415 is confirmed. Heuristically corrected effective-medium treatments satisfactorily provide Reynolds fluid-flow conductances, e.g., for isotropic roughness, we identify accurate closed-form expressions, which only depend on the mean gap and the relative contact area.
