Journal
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
Volume 53, Issue 5, Pages 387-398Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2011.03.001
Keywords
Damage mechanics; Thermo-mechanical coupling; Computational plasticity
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Funding
- CNPq (National Council for Scientific and Technological Development) [309147/2006-9]
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Mechanical degradation and ductile failure in metal forming operations can be successfully modelled using Continuum Damage Mechanics. In addition to elastic-plastic deformations, heat transfer affects material behaviour, imposing further effects upon damage evolution. This paper addresses modelling aspects and presents a numerical discussion of the coupled effects between ductile damage and temperature evolution. The heat transfer problem is formulated based on a transient heat conduction approximation, in which heat transfer at the free surfaces and heating due to dissipation of the inelastic work are accounted for. Damage is modelled using an elastic-plastic fully coupled approximation, in which differences in tensile and compressive stress states are included. (C) 2011 Elsevier Ltd. All rights reserved.
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