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Abstract

This paper presents a boundary element analysis of the contact mechanics between elastic indenters and other compliant structures with hard coatings of different properties and thicknesses. Two types of indenter are considered: spherical and conical. The first produces a non-linear contact problem while the latter, used in the soft impresser hardness-testing technique, has a flat tip which results in a conformal type of contact. Frictional conditions are introduced and partial slip phenomena observed. The relevance of friction is verified in all cases. An efficient iterative axisymmetric boundary element formulation has been developed for this purpose, which incorporates features such as subregion modelling and a fast solution procedure. Results with the two types of indenter are compared with available analytical expressions and a commercial finite element package.

Keywords

Boundary elements contact axisymmetry coatings friction

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Frictional contact analysis of coated axisymmetric bodies using the boundary element method

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