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

Takhar, Harmindar S., Bhargava, Rama, Rawat, S., Bég, O. Anwar, 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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