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TECHNICAL BRIEFS

Contact of Coated Systems Under Sliding Conditions

[+] Author and Article Information
Lifeng Ma

MSSV, Department of Engineering Mechanics, Xi’an Jiaotong University, 710049, P. R. C.malf@mail.xjtu.edu.cn

Alexander M. Korsunsky

Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK

Kun Sun

Department of Material Process Engineering, Xi’an Jiaotong University, 710049, P. R. C.

J. Tribol 128(4), 886-890 (Apr 24, 2006) (5 pages) doi:10.1115/1.2345415 History: Received July 14, 2005; Revised April 24, 2006

Abstract

The contact of coated systems under sliding conditions is considered within the framework of elasticity theory with the assumption of perfect bond between coating and substrate. Formulation is introduced in the form of a system of coupled singular integral equations of the second kind with Cauchy kernels that describe contact problems for coated bodies under complete, semi-complete and incomplete contact conditions. Accurate and efficient numerical method for the solution of sliding contact problems is described. Explicit results are presented for the interpolative Gauss-Jacobi numerical integration scheme for singular integral equations of the second kind with Cauchy kernels. The method captures correctly both regular and singular behavior of the traction distribution near the edges of contact. Several cases of sliding contact are considered to demonstrate the validity of the method.

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Figures

Figure 1

Various types of contact of coated systems under sliding conditions (a) Incomplete contact (b) Semi-complete contact (c) Complete contact

Figure 2

Normal traction versus stiffness of layer for a rigid flat indenter with rounded corners pressing into a coated half plane under normal load (P=1.5MN∕m, h=2mm, f=0, n=51)

Figure 3

Normal traction distributions due to a coated substrate in sliding frictional contact with a rigid flat- and-rounded indenter (P=1.5MN∕m, h=2mm, f=−0.3, n=51)

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