Influence of the Loading Path on the Strength of Fiber-Reinforced Composites Subjected to Transverse Compression and Shear

Totry, Essam; González Martínez, Carlos Daniel y Llorca Martinez, Francisco Javier (2008). Influence of the Loading Path on the Strength of Fiber-Reinforced Composites Subjected to Transverse Compression and Shear. "International Journal of Solids and Structures", v. 45 (n. 6); pp. 1663-1675. ISSN 0020-7683.

Descripción

Título: Influence of the Loading Path on the Strength of Fiber-Reinforced Composites Subjected to Transverse Compression and Shear
Autor/es:
  • Totry, Essam
  • González Martínez, Carlos Daniel
  • Llorca Martinez, Francisco Javier
Tipo de Documento: Artículo
Título de Revista/Publicación: International Journal of Solids and Structures
Fecha: Marzo 2008
Volumen: 45
Materias:
Palabras Clave Informales: A: fracture mechanisms; A: microstructures; B: fiber-reinforced composite material; B: constitutive behavior; C: finite elements
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 influence of the loading path on the failure locus of a composite lamina subjected to transverse compression and out-of-plane shear is analyzed through computational micromechanics. This is carried out using the finite element simulation of a representative volume element of the microstructure, which takes into account explicitly fiber and matrix spatial distribution within the lamina. In addition, the actual failure mechanisms (plastic deformation of the matrix and interface decohesion) are included in the simulations through the corresponding constitutive models. Two different interface strength values were chosen to explore the limiting cases of composites with strong or weak interfaces. It was found that failure locus was independent of the loading path for the three cases analyzed (pseudo-radial, compression followed by shear and shear followed by compression) in the composites with strong and weak interfaces. This result was attributed to the fact that the dominant failure mechanism in each material was the same in transverse compression and in shear. Failure is also controlled by the same mechanisms under a combination of both stresses and the failure locus depended mainly on the magnitude of the stresses that trigger fracture rather than in the loading path to reach the critical condition.

Más información

ID de Registro: 2587
Identificador DC: http://oa.upm.es/2587/
Identificador OAI: oai:oa.upm.es:2587
Depositado por: Memoria Investigacion
Depositado el: 22 Mar 2010 12:45
Ultima Modificación: 20 Abr 2016 12:14
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