Meyer Law Application for Solving Problems of Surface Plastic Deformation by Spherical Indentation

Abstract:

A method for determining contact characteristics occurring in spherical indentation depending on the properties of an elastic-plastic material governed by the hardening Hollomon power law is proposed. In this case the empirical Meyer law relating a spherical indentation load with an indentation diameter d is used. Basically, the Meyer law is not related to the mechanical characteristics of the test material. The study used the relations between the strain hardening exponent n and the Meyer law constant obtained by S.I. Bulychev. The effects of «sink-in / pile-up» are considered. It is shown that there is no need to define Meyer law constants. The scope of application of the proposed equations is defined. A comparison of the results obtained with the published results based on the finite element (FE) analysis is given.

• Periodical: Applied Mechanics and Materials (Volume 788)
• Pages: 199-204
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.788.199
• Online since: August 2015
• Authors: Petr M. Ogar*, D.B. Gorokhov
• Keywords: Elastic-Plastic Contact, Hollomon Power Law, Material Hardening, Meyer Law, Spherical Indentation, Strain Hardening Exponent, Surface Plastic Deformation

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