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A High-order Isotropic Continuum Damage Evolution Model

Thakkar, Bhairav K and Pandey, PC (2007) A High-order Isotropic Continuum Damage Evolution Model. In: International Journal of Damage Mechanics, 16 (4). pp. 403-426.

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Abstract

In this study, a continuum isotropic plastic damage evolution model has been derived in the framework of internal variable theory of thermodynamics. A new dissipation potential function has been suggested as a basis for developing the high-order damage evolution model based on continuum damage mechanics (CDM) theory. Subsequently, a high-order non-linear damage evolution model is derived. The damage model is based on the concept of effective stress and the principle of strain equivalence. The performance of the developed model is studied by comparing it with experimental data available in the literature for materials like aluminum, copper, spheroidized steel, and steel—XC38. The damage model is found to be versatile and is able to represent the experimental damage evolution patterns with a close agreement.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to SAGE Publications.
Keywords: continuum damage mechanics;isotropic damage model.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 28 Jul 2008
Last Modified: 27 Aug 2008 13:38
URI: http://eprints.iisc.ernet.in/id/eprint/15275

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