Investigation of lubricant transfer and distribution at head/disk interface in air-helium gas mixtures

Zhengqiang TANG; Dongdong ZHOU; Tong JIA; Deng PAN; Chuanwei ZHANG

doi:10.1007/s40544-018-0233-7

Friction 2019, 7(6): 564-571 https://doi.org/10.1007/s40544-018-0233-7

Research Article |

Open Access | Issue | Published: 06 November 2018

Investigation of lubricant transfer and distribution at head/disk interface in air-helium gas mixtures

Show Author's Information Hide Author's Information Zhengqiang TANG^¹(

), Dongdong ZHOU^¹, Tong JIA^¹, Deng PAN^², Chuanwei ZHANG^³

1School of Mechanical Engineering, Guizhou University, Guiyang 550025, China

2School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China

3MIIT Key Laboratory of Aerospace Bearing Technology and Equipment, Harbin Institute of Technology, Harbin 150001, China

Keywords:

molecular dynamics, head/disk interface, lubricant transfer, air-helium gas mixtures

Cite this article:

TANG Z, ZHOU D, JIA T, et al. Investigation of lubricant transfer and distribution at head/disk interface in air-helium gas mixtures. Friction, 2019, 7(6): 564-571. https://doi.org/10.1007/s40544-018-0233-7

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Abstract

Lubricant transfer and distribution at the head/disk interface in air-helium gas mixtures is investigated using a developed model that combines an air-bearing model with a molecular dynamics model. The pressure distribution is calculated by the air-bearing model at the head/disk interface with respect to the helium content and the pressure obtained is then input to the molecular dynamics model to understand the lubricant transfer mechanism. Finally, the effects of pressure at the boundary condition and disk velocity on lubricant transfer are discussed in relation to the helium fraction within the air-helium gas mixtures. Results show there is a decrease in the pressure difference with an increase in the helium percentage, which leads to a decrease in the volume of the lubricant transferred. The results also suggest that the lubricant is not easily to transfer in gas mixtures with a high percentage of helium, even when both higher disk velocities and pressure boundary conditions are applied.

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About this article

Investigation of lubricant transfer and distribution at head/disk interface in air-helium gas mixtures

Show Author's information Hide Author's Information Zhengqiang TANG^¹(

), Dongdong ZHOU^¹, Tong JIA^¹, Deng PAN^², Chuanwei ZHANG^³

1School of Mechanical Engineering, Guizhou University, Guiyang 550025, China

2School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China

3MIIT Key Laboratory of Aerospace Bearing Technology and Equipment, Harbin Institute of Technology, Harbin 150001, China

Abstract

Keywords: molecular dynamics, head/disk interface, lubricant transfer, air-helium gas mixtures

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Publication history

Received: 02 May 2018

Revised: 26 June 2018

Accepted: 14 July 2018

Published: 06 November 2018

Issue date: December 2019

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (51505093, 51605113), the Young Talents Project of Education Department of Guizhou Province (KY[2016]116), the Science and Technology Project of Guizhou Province ([2016]1035), and the Science and Technology Innovation Project for Overseas Scholars of Guizhou Province.

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