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PREDICTIVE SCIENCE AND TECHNOLOGY IN MECHANICS AND MATERIALS

Advances in Discrete Dislocations Dynamics and Multiscale Modeling

[+] Author and Article Information
S. Groh

Center for Advanced Vehicular System, Mississippi State University, Box 5405, Mississippi State, MS 39762

H. M. Zbib

School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164

J. Eng. Mater. Technol 131(4), 041209 (Sep 01, 2009) (10 pages) doi:10.1115/1.3183783 History: Received March 02, 2009; Revised May 29, 2009; Published September 01, 2009

Discrete dislocation dynamics is a numerical tool developed to model the plasticity of crystalline materials at an intermediate length scale, between the atomistic modeling and the crystal plasticity theory. In this review we show, using examples from the literature, how a discrete dislocation model can be used either in a hierarchical or a concurrent multiscale framework. In the last section of this review, we show through the uniaxial compression of microcrystal application, how a concurrent multiscale model involving a discrete dislocation framework can be used for predictive purposes.

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Copyright © 2009 by American Society of Mechanical Engineers
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Figures

Grahic Jump Location
Figure 1

Hierarchical multiscale modeling of the plasticity involving three characteristic length scales

Grahic Jump Location
Figure 2

Multiscale dislocation dynamics plasticity model: coupling of dislocation dynamics with continuum elastovisoplasticty

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