Segmented bi-Gaussian stratified elastic asperity contact model of Leefe (1998, “‘Bi-Gaussian’ Representation of Worn Surface Topography in Elastic Contact Problems,” Tribol. Ser., 34, pp. 281–290), which suits for worn surfaces, has been improved. It still exhibits two drawbacks: (1) the arbitrary assumption of the probability density function (PDF) consisting of two component PDFs intersecting at a knee-point, violating the unity-area demand and (2) the preference for large roughness-scale part of the surface, leading to an error on the characterization of small roughness-scale part. A continuous bi-Gaussian stratified elastic asperity contact model is proposed based on a surface combination theory and a continuous separation method. The two stratified contact models are applied to a simulated pure bi-Gaussian surface and four real worn surfaces. The results show that the modified segmented and the continuous stratified contact models are both validated by a deterministic model with better accuracy for the continuous one.
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March 2017
Research-Article
Stratified Revised Asperity Contact Model for Worn Surfaces
Songtao Hu,
Songtao Hu
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: HSTTAOTAO@163.com
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: HSTTAOTAO@163.com
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Noel Brunetiere,
Noel Brunetiere
Institut Pprime,
CNRS-Universite de Poitiers-ENSMA,
Futuroscope Chasseneuil Cedex 86962, France
e-mail: noel.brunetiere@univ-poitiers.fr
CNRS-Universite de Poitiers-ENSMA,
Futuroscope Chasseneuil Cedex 86962, France
e-mail: noel.brunetiere@univ-poitiers.fr
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Weifeng Huang,
Weifeng Huang
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: huangwf@tsinghua.edu.cn
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: huangwf@tsinghua.edu.cn
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Xiangfeng Liu,
Xiangfeng Liu
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: liuxf@tsinghua.edu.cn
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: liuxf@tsinghua.edu.cn
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Yuming Wang
Yuming Wang
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: yumingwang@tsinghua.edu.cn
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: yumingwang@tsinghua.edu.cn
Search for other works by this author on:
Songtao Hu
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: HSTTAOTAO@163.com
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: HSTTAOTAO@163.com
Noel Brunetiere
Institut Pprime,
CNRS-Universite de Poitiers-ENSMA,
Futuroscope Chasseneuil Cedex 86962, France
e-mail: noel.brunetiere@univ-poitiers.fr
CNRS-Universite de Poitiers-ENSMA,
Futuroscope Chasseneuil Cedex 86962, France
e-mail: noel.brunetiere@univ-poitiers.fr
Weifeng Huang
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: huangwf@tsinghua.edu.cn
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: huangwf@tsinghua.edu.cn
Xiangfeng Liu
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: liuxf@tsinghua.edu.cn
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: liuxf@tsinghua.edu.cn
Yuming Wang
State Key Laboratory of Tribology,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: yumingwang@tsinghua.edu.cn
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: yumingwang@tsinghua.edu.cn
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received March 28, 2016; final manuscript received August 8, 2016; published online January 10, 2017. Assoc. Editor: Mircea Teodorescu.
J. Tribol. Mar 2017, 139(2): 021403 (12 pages)
Published Online: January 10, 2017
Article history
Received:
March 28, 2016
Revised:
August 8, 2016
Citation
Hu, S., Brunetiere, N., Huang, W., Liu, X., and Wang, Y. (January 10, 2017). "Stratified Revised Asperity Contact Model for Worn Surfaces." ASME. J. Tribol. March 2017; 139(2): 021403. https://doi.org/10.1115/1.4034531
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