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Self-Adapting Microscale Surface Grooves for Hydrodynamic Lubrication

Title
Self-Adapting Microscale Surface Grooves for Hydrodynamic Lubrication
Author
Jong Wook Hong
Keywords
Fluid Mechanics Methods; EHL; Hydrodynamic Bearings
Issue Date
2009-01
Publisher
TAYLOR & FRANCIS INC
Citation
TRIBOLOGY TRANSACTIONS, v. 52, no. 1, page. 1-11
Abstract
The tribological performance of a lubricated surface depends largely on the ability of the surface to maintain a sufficient film thickness under high loads. One way of improving the performance is to modify the surface by inducing changes in the geometry of the surface. This work deals with modeling, creating, and testing novel adaptive microscale surface geometries to improve the tribological performance in terms of their load carrying capacity and stiffness. Numerical methods are used to model and simulate the performance of these surfaces. The coupled mechanisms of elastic deformation and hydrodynamic fluid pressure were solved simultaneously to give the load support. A parametric study was also performed by varying the input conditions and variables involved. Efforts were made to optimize the geometry of the surface to improve its load-carrying capacity and stiffness. Numerical results show that the adapting surfaces are able to increase the effective stiffness of the hydrodynamic film in comparison to conventional grooved surfaces. It was also theoretically shown that in some cases the adapting microscale structures perform better in terms of the load-carrying capacity for the same amount of film thickness.
URI
https://www.tandfonline.com/doi/full/10.1080/10402000801888960https://repository.hanyang.ac.kr/handle/20.500.11754/166507
ISSN
1040-2004; 1547-397X
DOI
10.1080/10402000801888960
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > BIONANO ENGINEERING(생명나노공학과) > Articles
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