Novel approaches to the simultaneous estimate of elastic/plastic parameters in indentation contact mechanics

Abstract

Analytical approaches to the simultaneous estimate of elastic modulus E’ as a measure for elasticity and the true hardness H as a measure for plasticity are discussed on the basis of a simple elastoplastic model under an indentation contact. Two different methods, Method I and Method II, for the experimental determination of E’ and H are examined. Extensive finite element analyses in elastoplastic indentation contact with linear strain-hardening give an important physical insight into the true hardness H.