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International Journal for Multiscale Computational Engineering
Импакт фактор: 1.016 5-летний Импакт фактор: 1.194 SJR: 0.554 SNIP: 0.68 CiteScore™: 1.18

ISSN Печать: 1543-1649
ISSN Онлайн: 1940-4352

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International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.2013005506
pages 543-563


Alireza Tabarraei
Department of Mechanical Engineering, University of North Carolina at Charlotte, 9201 University City Blvd., Charlotte, North Carolina 28223-0001, USA
Jeong-Hoon Song
University of Colorado Boulder
Haim Waisman
Department of Civil Engineering and Engineering Mechanics, Columbia University, New York, New York 10027, USA

Краткое описание

A micro-macro two-scale method for modeling adiabatic shear bands in rate-dependent materials is presented. The phantom node method, which is a variant of the extended finite element method is used to model the shear band at the macroscale. The key contribution is the development of a micromodel which allows the extraction of tangential and normal traction-separation laws, i.e., cohesive laws. These extracted rate-dependent cohesive laws are then injected back into the macro scale to accurately model the postlocalization behavior. The results show good accuracy as compared to very fine finite element meshes but are orders of magnitude faster. Hence the scheme is attractive when tracking of shear bands is of greater importance than microscopic behavior.


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