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J. Funct. Biomater. 2014, 5(2), 78-98; doi:10.3390/jfb5020078

Hydrodynamically Lubricated and Grooved Biomimetic Self-Adapting Surfaces

Mechanical Engineering Department, Auburn University, 1418 Wiggins Hall, Auburn, AL 36849, USA
SKL SVMS, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, Shaanxi, China
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 13 March 2014 / Revised: 12 May 2014 / Accepted: 26 May 2014 / Published: 4 June 2014
(This article belongs to the Special Issue Biomimetic Materials)
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In many machines and mechanical components, there is a need for new bearing technologies to reduce friction and wear, and provide precision control of motion when the load is varied. This can be provided by electronically controlled actuators and sensors on the surfaces, but then the system reliability can be an issue. In contrast, biomimetic surfaces can be created that adapt mechanically to variations in load. This work uses numerical methods to research the use of self-adapting surfaces for bearings that are based on the deformable nature of biological materials such as articular cartilage. These surfaces are designed to change their profiles to achieve a desired behavior, without any external control. The surfaces change their profile to control the film height and tilt of the bearing to a near constant value for different loads. If the surfaces are tilted, the grooved self-adapting surfaces will also react with a larger restoring moment than a conventional grooved surface. These surfaces could be beneficial to applications where electrical systems and controls are not feasible.
Keywords: hydrodynamic; texture; lubrication; adaptive; tilted step bearing; Rayleigh hydrodynamic; texture; lubrication; adaptive; tilted step bearing; Rayleigh
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Jackson, R.L.; Lei, J. Hydrodynamically Lubricated and Grooved Biomimetic Self-Adapting Surfaces. J. Funct. Biomater. 2014, 5, 78-98.

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