Three-dimensional simulation of deformation fields underneath vickers indenter: effects of power-law plasticity

Chollacoop, Nuwong ; Ramamurty, Upadrasta (2010) Three-dimensional simulation of deformation fields underneath vickers indenter: effects of power-law plasticity International Journal of Modern Physics B (IJMPB), 24 (1-2). pp. 238-246. ISSN 0217-9792

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Official URL: http://www.worldscinet.com/ijmpb/24/2401n02/S02179...

Related URL: http://dx.doi.org/10.1142/S0217979210064174

Abstract

The effects of power-law plasticity (yield strength and strain hardening exponent) on the plastic strain distribution underneath a Vickers indenter was systematically investigated by recourse to three-dimensional finite element analysis, motivated by the experimental macro- and micro-indentation on heat-treated Al-Zn-Mg alloy. For meaningful comparison between simulated and experimental results, the experimental heat treatment was carefully designed such that Al alloy achieve similar yield strength with different strain hardening exponent, and vice versa. On the other hand, full 3D simulation of Vickers indentation was conducted to capture subsurface strain distribution. Subtle differences and similarities were discussed based on the strain field shape, size and magnitude for the isolated effect of yield strength and strain hardening exponent.

Item Type:Article
Source:Copyright of this article belongs to World Scientific Publishing Company.
Keywords:Finite Element; Vickers Indentation; Deformation Field; Power-Law
ID Code:62548
Deposited On:22 Sep 2011 03:13
Last Modified:22 Sep 2011 03:13

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