Paper Title:
A Rate-Independent 'Stack' Model of a Polycrystalline Aggregate
  Abstract

The 'stack' model of a rate-independent rigid-plastic polycrystalline material is developed. In the 'stack' model, stacks of N neighboring sub-grain domains collectively accommodate the imposed macroscopic deformation while enforcing the velocity and traction continuity condition with its neighbors. The developed 'stack' model is applied to simulate the two-dimensional polycrystalline aggregate under macroscopically imposed plane-strain tension. The effect of inter- and intra-grain interactions on qualitative and quantitative variations in the predicted macroscopic stress-strain response and texture evolution are presented. The diminishing trend of constraint on individual sub-grain domains and texturing rate with stack size N, and saturation for large N also given.

  Info
Periodical
Materials Science Forum (Volumes 702-703)
Chapter
Chapter 2: Deformation
Edited by
Asim Tewari, Satyam Suwas, Dinesh Srivastava, Indradev Samajdar and Arunansu Haldar
Pages
192-195
DOI
10.4028/www.scientific.net/MSF.702-703.192
Citation
M. A. Kumar, S. Mahesh, P. Venkitanarayanan, "A Rate-Independent 'Stack' Model of a Polycrystalline Aggregate", Materials Science Forum, Vols. 702-703, pp. 192-195, 2012
Online since
December 2011
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Price
$32.00
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