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Memorias de investigación
Artículos en revistas:
Micromechanics of Elasto-plastic Materials Reinforced with Ellipsoidal Inclusions.
Año:2007
Áreas de investigación
  • Materiales
Datos
Descripción
The effective mechanical behavior of an elasto-plastic matrix reinforced with a random and homogeneous distribution of aligned elastic ellipsoids was obtained by the finite element simulation of a representative volume element (RVE) of the microstructure and by homogenization methods. In the latter, the composite behavior was modeled by linearization of the local behavior through the use of the tangent or secant stiffness tensors of the phases. "Quasi-exact" results for the tensile deformation were attained by averaging of the stress-strain curves coming from the numerical simulation of RVEs containing a few dozens of ellipsoids. These results were used as benchmarks to assess the accuracy of the homogenization models. The best approximations to the reference numerical results were provided by the incremental and the second-order secant methods, while the classical or first-order secant approach overestimated the composite flow stress, particularly when the composite was deformed in the longitudinal direction. The discrepancies among the homogenization models and the numerical results were assessed from the analysis of the stress and strain microfields provided by the numerical simulations, which demonstrated the dominant effect of the localization of the plastic strain in the matrix on the accuracy of the homogenization models. (C) 2007 Elsevier Ltd. All rights reserved.
Internacional
Si
JCR del ISI
Si
Título de la revista
INT J SOLIDS STRUCT
ISSN
0020-7683
Factor de impacto JCR
1,569
Información de impacto
Volumen
44
DOI
Número de revista
21
Desde la página
6945
Hasta la página
6962
Mes
OCTUBRE
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: O. Pierard
  • Autor: Carlos Daniel Gonzalez Martinez (UPM)
  • Autor: Fco. Javier Llorca Martinez (UPM)
  • Autor: I. Doghri
  • Autor: Javier Segurado Escudero (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Materiales Estructurales avanzados y nanomateriales
  • Departamento: Ciencia de los Materiales
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