Just another WordPress site - Ruhr-Universität Bochum

Abstract

Depth-sensing indentations are very useful experiments for determining mechanical properties (i.e. Young’s modulus and hardness) of thin films as well as bulk materials. The aim of this work is to investigate cyclic indentation experiments instead of conventional load-unload experiments using finite element method. Numerical simulations for Vickers indentation are performed using Chaboche material model with three backstress terms in order to capture the experimental cyclic indentation curve. Different aspects of numerical modeling like element size, element type and integration scheme are also investigated in the scope of this work.