Numerical solution features for contact deformation problem of rough bodies in ANSYS

The numerical solution for deformation problem of two rough bodies and the contact thermal conductance one is difficult because of a large number of computational algorithms parameters significantly affecting the results. The deformation problem is highly nonlinear due to elastic-plastic material properties and geometry change of the contacting rough surfaces which can be an obstacle to successful calculations. The article presents the features of solving the contact deformation problem occurring between rough bodies by means of ANSYS software. The example of solution for a micron-sized roughness domain is given. The solver errors emerging during the solution process are considered as well as the meshing impact. The necessity of asperity rounding is analyzed. The recommendations to choose the finite element types as well as numerous ANSYS options for such calculations are given.

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