Computational and Theoretical Aspects of a Grain-Boundary Model at Finite Deformations

authored by: A. T. McBride, D. Gottschalk, B. D. Reddy, P. Wriggers, A. Javili
Abstract: A model to describe the role of grain boundaries in the overall response of a polycrystalline material at small length scales subject to finite deformations is presented. Three alternative thermodynamically consistent plastic flow relations on the grain boundary are derived and compared using a series of numerical experiments. The nu-merical model is obtained by approximating the governing relations using the finite element method. In addition, the infinitesimal and finite deformation theories are compared, and the limitations of the former made clear.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): Stanford University
University of Cape Town (UCT)
Type: Article
Journal: Technische Mechanik
Volume: 36
Pages: 102-119
No. of pages: 18
ISSN: 0232-3869
Publication date: 01.01.2016
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Mechanics of Materials, Mechanical Engineering
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