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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15575
Title: Two-temperature continuum model for metal plasticity
Authors: Roy Chowdhury, Shubhankar
Roy D.
Published in: Proceedings of Indian National Science Academy
Abstract: A physically based continuum plasticity model for metals from the consideration of non-equilibrium thermodynamics is presented. The modeling is accomplished in a two-temperature framework that appears naturally by considering the thermodynamic system to be composed of two weakly interacting subsystems, namely the kinetic vibrational and configurational subsystems. While the atomic vibrations of plastically deforming metals form the kinetic vibrational subsystem, much slower degrees of freedom in terms of the motion of defects constitute the configurational subsystem. Both subsystems assume their own temperatures and fall out of equilibrium from each other because of the externally imposed driving. Dislocation density characterising the configurational subsystem is considered to be the state variable for the present development. The continuum model accommodates finite deformation and describes plastic deformation in a yield-free framework via a microforce balance along with the conventional macroforce balance. ¬© 2016 Printed in India.
Citation: Proceedings of Indian National Science Academy, (2016), 247- 255
URI: https://doi.org/10.16943/ptinsa/2016/48417
http://repository.iitr.ac.in/handle/123456789/15575
Issue Date: 2016
Publisher: Indian National Science Academy
Keywords: Dislocation Density
Metal Viscoplasticity
Non-Equilibrium Thermodynamics
Two-Temperature Framework
ISSN: 3700046
Author Scopus IDs: 56818427600
7402439420
Author Affiliations: Chowdhury, S.R., Computational Mechanics Lab., Department of Civil Engineering, Indian Institute of Science, Bangalore, 560 012, India
Roy, D., Computational Mechanics Lab., Department of Civil Engineering, Indian Institute of Science, Bangalore, 560 01
Corresponding Author: Roy, D.; Computational Mechanics Lab., Department of Civil Engineering, Indian Institute of ScienceIndia; email: royd@civil.iisc.ernet.in
Appears in Collections:Conference Publications [CE]

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