AVERAGE FLOW MODEL FOR DETERMINING EFFECTS OF 3-DIMENSIONAL ROUGHNESS ON PARTIAL HYDRODYNAMIC LUBRICATION
AVERAGE FLOW MODEL FOR DETERMINING EFFECTS OF 3-DIMENSIONAL ROUGHNESS ON PARTIAL HYDRODYNAMIC LUBRICATION
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DOI：
10.1115/1.3453103
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发表时间：
1978-01-01
期刊：
影响因子：
--
通讯作者：
CHENG, HS
中科院分区：
文献类型：
--
作者：
PATIR, N;CHENG, HS
一种新的方法被用来确定表面粗糙度的影响，部分润滑接触。通过数值模拟得到了粗糙表面的压力和剪切流动因子，定义了粗糙表面的平均雷诺方程。通过使用测量或数值生成的粗糙表面，任何三维粗糙度结构可以用这种方法进行分析。平均雷诺方程得到的各向同性表面，并与方向图案的表面。这些表面的流动因子以h/σ和表面特征γ（定义为x和y相关长度的比值）的经验关系表示。
A new approach is utilized to determine the effects of surface roughness on partially lubricated contacts. An average Reynolds equation for rough surfaces is defined in terms of pressure and shear flow factors, which are obtained by numerical flow simulation. Through the use of measured or numerically generated rough surfaces, any three dimensional roughness structure can be analyzed with this method. The average Reynolds equation is obtained for isotropic surfaces, and for surfaces with directional patterns. The flow factors for these surfaces are expressed as empirical relations in terms of h/σ and a surface characteristic γ defined as the ratio of x and y correlation lengths.