Dislocation Dynamics in Non-conves Domains using Finite Elements with Embedded Discontinuities

Romero Olleros, Ignacio and Segurado Escudero, Javier and Llorca Martinez, Francisco Javier (2008). Dislocation Dynamics in Non-conves Domains using Finite Elements with Embedded Discontinuities. "Modelling and Simulation in Materials Science and Engineering", v. 16 (n. 3); pp. 1-19. ISSN 0965-0393. https://doi.org/10.1088/0965-0393/16/3/035008.

Description

Title: Dislocation Dynamics in Non-conves Domains using Finite Elements with Embedded Discontinuities
Author/s:
  • Romero Olleros, Ignacio
  • Segurado Escudero, Javier
  • Llorca Martinez, Francisco Javier
Item Type: Article
Título de Revista/Publicación: Modelling and Simulation in Materials Science and Engineering
Date: April 2008
ISSN: 0965-0393
Volume: 16
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The standard strategy developed by Van der Giessen and Needleman (1995 Modelling Simul. Mater. Sci. Eng. 3 689) to simulate dislocation dynamics in two-dimensional finite domains was modified to account for the effect of dislocations leaving the crystal through a free surface in the case of arbitrary non-convex domains. The new approach incorporates the displacement jumps across the slip segments of the dislocations that have exited the crystal within the finite element analysis carried out to compute the image stresses on the dislocations due to the finite boundaries. This is done in a simple computationally efficient way by embedding the discontinuities in the finite element solution, a strategy often used in the numerical simulation of crack propagation in solids. Two academic examples are presented to validate and demonstrate the extended model and its implementation within a finite element program is detailed in the appendix.

More information

Item ID: 2590
DC Identifier: http://oa.upm.es/2590/
OAI Identifier: oai:oa.upm.es:2590
DOI: 10.1088/0965-0393/16/3/035008
Official URL: http://iopscience.iop.org/0965-0393/16
Deposited by: Memoria Investigacion
Deposited on: 22 Mar 2010 12:21
Last Modified: 20 Apr 2016 12:14
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