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A deterministic model-based contact analysis of Gaussian and non-Gaussian rough surfaces using finite element method
M. M. Mayuram
Published in
2013
Volume: 5
   
Issue: 2
Pages: 102 - 130
Abstract
Rough surfaces having skewness values of -0.3, 0 and +0.3 and kurtosis ranging from two to four, are developed using FFT and analysed using FEM based ANSYS package. The continuity of elastic, elasto-plastic and plastic deformations of near realistic feature-based asperities and effects of asperity interactions are inherently included in the present deterministic contact approach. The results showed that the rough surface having positive skewness leads to minimum area of contact but attains the maximum value of mean contact pressure (Pmean) earlier and consequently can lead to severe wear when compared with Gaussian and negatively skewed surfaces. The area of contact and contact load decrease whereas the Pmean increases with an increase in kurtosis value. In the platykurtic surfaces, the contact load is shared by most of the contacting asperities and the neighbouring asperity interactions restrain the asperities to remain in elastic state mostly even at high loads. Copyright © 2013 Inderscience Enterprises Ltd.
About the journal
JournalInternational Journal of Computational Materials Science and Surface Engineering
ISSN17533465
Open AccessNo
Concepts (12)
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    ASPERITY INTERACTIONS
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    CONTACT ANALYSIS
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    Elasto-plastic
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    Gaussians
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    Non-gaussian
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    ROUGH SURFACES
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    Elastoplasticity
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    Finite element method
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    Gaussian distribution
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    Gaussian noise (electronic)
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    Higher order statistics
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    Surface measurement