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[61]
Wriggers P, 2007, CISM COURSES LECT, P129
A computational homogenization framework for soft elastohydrodynamic lubrication
被引：8
作者：
Budt, M.
[1
]
Temizer, I.
[2
]
Wriggers, P.
[1
]
机构：
[1] Leibniz Univ Hannover, Inst Continuum Mech, D-30167 Hannover, Germany
[2] Bilkent Univ, Dept Mech Engn, TR-06800 Ankara, Turkey
关键词：
Reynolds equation;
Surface roughness;
Homogenization;
Finite deformation;
AVERAGE FLOW MODEL;
HYDRODYNAMIC LUBRICATION;
SURFACE-ROUGHNESS;
CAVITATION;
CONTACT;
EQUATION;
D O I：
10.1007/s00466-012-0709-7
中图分类号：
O1 [数学];
学科分类号：
0701 ;
070101 ;
摘要：
The interaction between microscopically rough surfaces and hydrodynamic thin film lubrication is investigated under the assumption of finite deformations. Within a coupled micro-macro analysis setting, the influence of roughness onto the macroscopic scale is determined using FE (2)-type homogenization techniques to reduce the overall computational cost. Exact to within a separation of scales assumption, a computationally efficient two-phase micromechanical test is proposed to identify the macroscopic interface fluid flux from a lubrication analysis performed on the deformed configuration of a representative surface element. Parameter studies show a strong influence of both roughness and surface deformation on the macroscopic response for isotropic and anisotropic surfacial microstructures.
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页码：749 / 767
页数：19
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