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Mathematical modelling of micro-indentatiaon experiment for the determination of mechanical characteristics of metals and alloys

Takhar, Harmindar S. and Bhargava, Rama and Rawat, S. and Bég, O. Anwar and Bég, Tasveer A. and Hung, Tin-Kan (2007) Mathematical modelling of micro-indentatiaon experiment for the determination of mechanical characteristics of metals and alloys. ISSN 0861-6663

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Abstract

The present paper aims at proposing an appropriate mathematical model and a finite element model of the microhardness test describing the deformation process. The finite element numerical simulations of Vickers microhardness test are performed. Different 2D axisymmetric and 3D-numerical finite element models are considered to describe the deformation processes. For the two-dimensional finite element model a substituting rigid conical indenter is used as an equivalent to the standard tetrahedral Vickers’ pyramid. As a result of 2D and 3D finite element simulations, the load-penetration depth (P-h) curves are obtained numerically and compared with the P-h curves obtained from the experimental data. The results, obtained by numerical simulations give good coincidence with the experimental results.

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