Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
materials science
Spatial coupling in jerky flow using polycrystal plasticity
Acta Materialia, Volume 51, No. 13, Year 2003
Notification
URL copied to clipboard!
Description
A multiscale approach including a finite element framework for polycrystal plasticity is used to model jerky flow, also known as the Portevin-Le Chatelier effect. The local constitutive behavior comprises the standard description of the negative strain rate sensitivity of the flow stress in the domain of instability. Due to stress gradients inherent to the polycrystal formulation, the spatial coupling involved in the spatio-temporal dynamics of jerky flow is naturally accounted for in the model, without using any ad hoc gradient constitutive formulation. For the first time, the static, hopping and propagating band types are recovered in constant strain-rate tests, as well as the temporal properties of the stress serrations. The associated dynamic regimes are characterized and found consistent with recent experimental evidence of both chaos and self-organized criticality in Al-Mg polycrystals. © 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
Authors & Co-Authors
Kok, Schalk
United States, Urbana
University of Illinois Urbana-champaign
Beaudoin, Armand Joseph
United States, Urbana
University of Illinois Urbana-champaign
Fressengeas, Claude
France, Metz
Laboratoire D'étude Des Microstructures et de Mécanique Des Matériaux
Ananthakrishna, Garani
India, Bengaluru
Indian Institute of Science
Lebyodkin, Mikhaïl A.
Russian Federation, Moscow
Russian Academy of Sciences
Statistics
Citations: 121
Authors: 5
Affiliations: 5
Identifiers
Doi:
10.1016/S1359-6454(03)00114-9
ISSN:
13596454