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Modified Johnson core model for experimental indentation of materials

B.Halanov,
 
S.Ivanov,
 
V.Kartuzov
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Mathematical Models and Computing Experiment in Material Science - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2017, #19
http://www.materials.kiev.ua/article/2734

Abstract

An approximate model of indentation by sharp conical or pyramidal elastic indenters is presented, in which the sample is elastically plastically deformed and the material obeys the Mises yield condition. The model generalizes and refines Johnson's core model, based on the concept of the formation of a hydrostatic core adjacent to the indenter. Calculations are made for a number of materials and a comparison with like models is given.


CORE MODEL, ELASTICALLY DEFORMED INDENTER, MODELING OF INDENTATION

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