A numerical study of the influence of microvoids in the transverse mechanical response of unidirectional composites

Ashouri Vajari, Danial; González Martínez, Carlos Daniel; Llorca Martinez, Francisco Javier y Legarth, Brian Nyvang (2014). A numerical study of the influence of microvoids in the transverse mechanical response of unidirectional composites. "Composites Science and Technology", v. 97 ; pp. 46-54. ISSN 0266-3538. https://doi.org/10.1016/j.compscitech.2014.04.004.

Descripción

Título: A numerical study of the influence of microvoids in the transverse mechanical response of unidirectional composites
Autor/es:
  • Ashouri Vajari, Danial
  • González Martínez, Carlos Daniel
  • Llorca Martinez, Francisco Javier
  • Legarth, Brian Nyvang
Tipo de Documento: Artículo
Título de Revista/Publicación: Composites Science and Technology
Fecha: 16 Junio 2014
Volumen: 97
Materias:
Palabras Clave Informales: Computational mechanics; Polymer–matrix composites (PMCs); Porosity/Voids; Failure criterion
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The effect of porosity on the transverse mechanical properties of unidirectional fiber-reinforced composites is studied by means of computational micromechanics. The composite behavior is simulated by the finite element analysis of a representative volume element of the composite microstructure in which the random distribution of fibers and the voids are explicitly included. Two types of voids – interfiber voids and matrix voids – were included in the microstructure and the actual damage mechanisms in the composite, namely matrix and interface failure, were accounted for. It was found that porosity (in the range 1–5%) led to a large reduction in the transverse strength and the influence of both types of voids in the onset and propagation of damage throughout the microstructure was studied under transverse tension and compression. Finally, the failure locus of the composite lamina under transverse tension/compression and out-of-plane shear was obtained by means of computational micromechanics and compared with the predictions of Puck’s model and with experimental data available in the literature. The results show that the strength of composites is significantly reduced by the presence of voids

Más información

ID de Registro: 35464
Identificador DC: http://oa.upm.es/35464/
Identificador OAI: oai:oa.upm.es:35464
Identificador DOI: 10.1016/j.compscitech.2014.04.004
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0266353814001109
Depositado por: Memoria Investigacion
Depositado el: 03 Jun 2015 18:04
Ultima Modificación: 03 Jun 2015 18:04
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