Multi-scale soft porous lubrication

Zenghao Zhu; Rungun Nathan; Qianhong Wu

doi:10.1016/j.triboint.2019.05.003

Multi-scale soft porous lubrication

Zenghao Zhu, Rungun Nathan, Qianhong Wu

Division of Engineering, Business & Computing (Berks)

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

This paper reports a comprehensive study of soft lubrication in a porous layer whose thickness ranges from 3.1 mm to 19.0 mm, using two experimental setups for different scales of porous media. We demonstrate that the lubrication theory for soft porous media (Feng and Weinbaum, J. Fluid Mech. 422, 282, 2000)is valid in describing the fluid pressurization, while the theory by Toll (Polym Eng Sci 38, 1337, 1998)is appropriate in predicting the solid phase lifting force. A new model is then developed for estimating the contribution of the fluid pressure to the total lift, which, along with extensive dimensional analysis, provides critical insights for the application of soft porous lubrication in industrial applications.

Original language	English (US)
Pages (from-to)	246-253
Number of pages	8
Journal	Tribology International
Volume	137
DOIs	https://doi.org/10.1016/j.triboint.2019.05.003
State	Published - Sep 2019

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.triboint.2019.05.003

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title = "Multi-scale soft porous lubrication",

abstract = "This paper reports a comprehensive study of soft lubrication in a porous layer whose thickness ranges from 3.1 mm to 19.0 mm, using two experimental setups for different scales of porous media. We demonstrate that the lubrication theory for soft porous media (Feng and Weinbaum, J. Fluid Mech. 422, 282, 2000)is valid in describing the fluid pressurization, while the theory by Toll (Polym Eng Sci 38, 1337, 1998)is appropriate in predicting the solid phase lifting force. A new model is then developed for estimating the contribution of the fluid pressure to the total lift, which, along with extensive dimensional analysis, provides critical insights for the application of soft porous lubrication in industrial applications.",

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AB - This paper reports a comprehensive study of soft lubrication in a porous layer whose thickness ranges from 3.1 mm to 19.0 mm, using two experimental setups for different scales of porous media. We demonstrate that the lubrication theory for soft porous media (Feng and Weinbaum, J. Fluid Mech. 422, 282, 2000)is valid in describing the fluid pressurization, while the theory by Toll (Polym Eng Sci 38, 1337, 1998)is appropriate in predicting the solid phase lifting force. A new model is then developed for estimating the contribution of the fluid pressure to the total lift, which, along with extensive dimensional analysis, provides critical insights for the application of soft porous lubrication in industrial applications.

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JO - Tribology International

JF - Tribology International

ER -

Multi-scale soft porous lubrication

Abstract

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