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Memorias de investigación
Artículos en revistas:
Virtual Fracture Testing of Fiber-reinforced Composites: A Computational Micromechanics Approach
Año:2007
Áreas de investigación
  • Materiales
Datos
Descripción
The use of multiscale finite clement simulations to perform virtual fracture tests of composite materials is demonstrated. The fracture behavior of a fiber-reinforced composite beam in presence of a notch perpendicular to the fibers was modeled using an embedded cell approach in three dimensions. The representation of the material in front of the notch tip-where damage was going to be concentrated-included the actual fiber-matrix topology, while the remainder of the beam was modeled as a linear thermo-elastic, transversally-isotropie homogeneous solid. The damage and fracture micromechanisms which controlled the onset of fracture (namely, plastic deformation of the matrix, brittle fiber fracture and fiber/matrix frictional sliding) were included in the behavior of the different phases and interfaces, and the corresponding micromechanical parameters governing their behavior were independently measured. Virtual fracture tests were carried out at 25 degrees C, 200 degrees C and 400 degrees C to determine the maximum load carried by the notched beams, and the apparent fracture toughness of the composite beams was computed from the maximum load and the initial notch length in the simulations. The predictions of the evolution of the fracture toughness with temperature were in good agreement with the experimental data without the need of adjustable or "tuning" parameters, which shows the potential of this approach to carry out "virtual" tests to predict the fracture behavior of novel microstructures and materials. (c) 2006 Elsevier Ltd. All rights reserved.
Internacional
Si
JCR del ISI
Si
Título de la revista
ENG FRACT MECH
ISSN
0013-7944
Factor de impacto JCR
1,227
Información de impacto
Volumen
74
DOI
Número de revista
7
Desde la página
1126
Hasta la página
1138
Mes
MAYO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Fco. Javier Llorca Martinez (UPM)
  • Autor: Carlos Daniel Gonzalez Martinez (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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