Finite element simulation of nanoindentation tests using a macroscopic computational model |
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Authors: | Mourad Khelifa Vanessa Fierro Alain Celzard |
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Affiliation: | 1. University of Lorraine, ENSTIB, 27 rue Philippe Séguin, CS 60036, 88026, Epinal Cedex, France 2. LERMAB, EA 4370, ENSTIB, 27 rue Philippe Séguin, CS 60036, 88026, Epinal Cedex, France 3. Institut Jean Lamour, UMR CNRS 7198, ENSTIB, 27 rue Philippe Séguin, CS 60036, 88026, Epinal Cedex, France
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Abstract: | The aim of this work was to develop a numerical procedure to simulate nanoindentation tests using a macroscopic computational model. Both theoretical and numerical aspects of the proposed methodology, based on the coupling of isotropic elasticity and anisotropic plasticity described with the quadratic criterion of Hill are presented to model this behaviour. The anisotropic plastic behaviour accounts for the mixed nonlinear hardening (isotropic and kinematic) under large plastic deformation. Nanoindentation tests were simulated to analyse the nonlinear mechanical behaviour of aluminium alloy. The predicted results of the finite element (FE) modelling are in good agreement with the experimental data, thereby confirming the accuracy level of the suggested FE method of analysis. The effects of some technological and mechanical parameters known to have an influence during the nanoindentation tests were also investigated. |
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