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Abstract Materials containing thin coatings are frequently used for the design of many industrial applications, profiting from its excellent physical and chemical qualities. However, due to the small size of its thickness, numerical analysis of the behavior of these structures represents a great challenge to researchers in engineering applications. The key to analyze coating structure problems by using boundary element method (BEM) is the accurate computation of nearly singular integrals. In this paper, the coating structure is divided into the substrate domain and the coating one by using a multi-domain boundary element approach, and then a general transformation method has been introduced to remove or damp out the near singularities of the kernel integrals in the coating domain. Both temperatures and fluxes are accurately computed by using the present method. Numerical examples demonstrate that the present method can effectively deal with coating structure problems even when its thickness is as small as 1E-10.
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Received: 16 November 2009
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Corresponding Authors:
yao ming zhang
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2011, Vol. 32 
