Abstract
ABSTRACTIn this study, the ratio f of the plastic zone radius, , to the contact radius, , for different material properties and at various indentation depths was investigated using a three-dimensional finite element model for strain hardening materials. The effective indentation radius and f were determined via the statistical volume of plastic zone. It was found that f is significantly influenced by material properties, such as yield strength, Young’s modulus, strain hardening exponent and Poisson’s ratio, and less influenced by the indentation depth. A relationship between f and the material properties was proposed.
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