ICAMS / Interdisciplinary Centre for Advanced Materials Simulation
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Numerical modeling of cyclic nano-indentation using Chaboche material model

Date: 27.08.2018
Time: 14:40
Place: Sino-German Symposium and Summer School, Bochum, Germany

Hafiz Muhammad Sajjad
Hamad Hassan
Alexander Hartmaier

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.

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