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Three-Dimensional simulation of deformation fields underneath vickers indenter:Effects of power-law Plasticity

Chollacoop, N and Ramamurty, U (2010) Three-Dimensional simulation of deformation fields underneath vickers indenter:Effects of power-law Plasticity. In: Symposium on Mechanical Behavior of Micro- and Nano-Scale System held at the ICMAT 2009, JUN 28-JUL 03, 2009, Singapore.

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

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: Conference Paper
Additional Information: Copyright of this article belongs to World Scientific Publishing Company.
Keywords: Finite element; Vickers indentation; Deformation field; Power-law
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 12 Jul 2010 09:50
Last Modified: 12 Jul 2010 09:50
URI: http://eprints.iisc.ernet.in/id/eprint/29137

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