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Coupled thermoelastic simulation of nanovoid cavitation by dislocation emission at finite temperature

Ponga, M. and Ortiz, M. and Ariza, M. P. (2013) Coupled thermoelastic simulation of nanovoid cavitation by dislocation emission at finite temperature. In: Computational Methods for Coupled Problems in Science and Engineering V. International Center for Numerical Methods in Engineering , Barcelona, Spain, pp. 1213-1225. ISBN 978-84-941407-6-1. https://resolver.caltech.edu/CaltechAUTHORS:20141218-102818033

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Abstract

In this work we study the early onset of void growth by dislocation emission at finite temperature in single crystal of copper under uniaxial loading conditions using the HotQC method. The results provide a detailed characterization of the cavitation mechanism, including the geometry of the emitted dislocations, the dislocation reaction paths and attendant macroscopic quantities of interest such as the cavitation pressure. In addition, this work shows that as prismatic dislocation loops grow and move away from the void, the material surrounded by these loops is pushed away from the void surface, giving rise to a flux of material together with a heat flux through the crystal.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://congress.cimne.com/coupled2013/proceedings/full/p909.pdfPublisherArticle
ORCID:
AuthorORCID
Ponga, M.0000-0001-5058-1454
Ortiz, M.0000-0001-5877-4824
Ariza, M. P.0000-0003-0266-0216
Additional Information:© 2013 the authors. We gratefully acknowledge the support of the Ministerio de Ciencia e Innovaciόn of Spain (DPI2009-14305-C02-01) and the support of the Consejería de Innovaciόn of Junta de Andalucía (P09-TEP-4493). Support for this study was also provided by the Department of Energy National Nuclear Security Administration under Award Number DE-FC52-08NA28613 through Caltech’s ASC/PSAAP Center for the Predictive Modeling and Simulation of High Energy Density Dynamic Response of Materials.
Funders:
Funding AgencyGrant Number
Ministerio de Ciencia e Innovaciόn (MICINN)DPI2009-14305-C02-01
Consejería de Innovaciόn of Junta de AndalucíaP09-TEP-4493
Department of Energy (DOE) National Nuclear Security AdministrationDE-FC52-08NA28613
Subject Keywords:Multiscale modeling, Crystal plasticity, Thermomechanical coupling, Nanovoids, Dislocations
Record Number:CaltechAUTHORS:20141218-102818033
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141218-102818033
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53015
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:18 Dec 2014 19:47
Last Modified:09 Mar 2020 13:19

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