The Effect of Poisson’s Ratio on the Contact Traction Distribution of a Functionally Graded Coating

Tie Jun Liu; Yue Sheng Wang

doi:10.4028/www.scientific.net/AMR.197-198.1591

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 197-198The Effect of Poisson’s Ratio on the Contact...

The Effect of Poisson’s Ratio on the Contact Traction Distribution of a Functionally Graded Coating

Abstract:

This paper deals with the finite frictional contact of a functionally graded coating with considering the effect of Poisson’s ratio. We assume that a functionally graded coated half-space is indented by a rigid spherical punch and that the shear modulus of FGMs varies as exponential function. The whole contact region is divided into the central adhesion zone and the slip annulus. Within the slip annulus, the shear stress is limited by friction. By using the Hankel integral transform technique, the problem is reduced to a set of Cauchy singular integral equations. A numerical method is used to get the contact pressure and tangential tractions in the contact region for different Poisson’s ratio. The results show that the variation of Poisson’s ratio has obvious effect on both normal and tangential tractions. With the increase of ν, the peak value of the normal traction increases and that of the tangential traction decreases.

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Periodical:

Advanced Materials Research (Volumes 197-198)

Pages:

1591-1594

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.197-198.1591

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Online since:

February 2011

Authors:

Tie Jun Liu, Yue Sheng Wang

Keywords:

Contact, Functionally Grade Coating, Poisson's Ratio, Singular Integral Equation

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