Modelling Kinetic Indentation in Topocomposite Surface of Elastic Rigid-plastic Solid Bodies

Abstract

Abstract-The mechanics of a rigid sphere contact interaction with the top composite surface of elastic rigid-plastic solids is analyzed. Analytic dependencies are obtained describing both the character of load changing on rigid pyramidal and spherical indenters versus the depth of indentation in a topcomposite and elastic and plastic properties of layered system components.

Elastic Characteristics Calculation for Thin Coatings and Bodies with a Topocomposite Structure Considering Specific Deformation of Layered Bodies during Instrumented Indentation

“…In accordance with our earlier analysis of the mechanics of the contact interaction of a hard spherical indenter with a planar topocomposite surface [1,2], the relations connecting the depth of penetration c  of a spherical indenter into a layered space and the composite effective modulus c K of the topocomposite surface with the corresponding parameters characterizing a homogeneous material which is the substrate material of the topocomposite, are the following:…”

“…The objective set in this work is achieved by applying the basic principles of the developed in [1][2][3] model of contact interaction of a spherical indenter with the elastic-plastic layered system surface simulating a solid surface hardened by a thin protective coating. The model is based on the modified Hertz problem, which takes into account the true diagram of the contact pressure in the sphere interaction with the hardened surface.…”