Elastoplastic Deformation of a Roughness Element

M. V. Murashov^a* and Yu. V. Kornev^b

^a Bauman Moscow State Technical University, Vtoraya Baumanskaya ul. 5, str. 1, Moscow, 105005 Russia
^b Institute of Applied Mechanics, Russian Academy of Sciences, Leninskii pr. 32a, Moscow, 119991 Russia
*e-mail: murashov@bmstu.ru

Received October 26, 2012; in final form, April 22, 2013

Abstract—The problem of using the mechanical properties determined in a macroexperiment in contact mod-
els for micron-sized roughness elements is considered. For a sample of commercial-purity AD1 aluminum, the
penetration depths of an indenter into a rough surface element that are determined in a physical experiment and
in a three-dimensional finite element simulation are compared. It is found that, with allowance for certain
assumptions, the application of the properties determined in a macroexperiment requires their correction to take
into account the cold work hardening of the surface layer in the sample material and the size effect.

DOI: 10.1134/S1063784214030189

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