Bilinear softening parameters and equivalent LEFM R-curve in quasibrittle failure

Morel, S.; Lespine, C.; Coureau, J.L.; Planas Rosselló, Jaime y Dourado, N. (2010). Bilinear softening parameters and equivalent LEFM R-curve in quasibrittle failure. "Journal of Solids and Structures", v. 47 (n. 6); pp. 837-850. ISSN 0020-7683. https://doi.org/10.1016/j.ijsolstr.2009.11.022.

Descripción

Título: Bilinear softening parameters and equivalent LEFM R-curve in quasibrittle failure
Autor/es:
  • Morel, S.
  • Lespine, C.
  • Coureau, J.L.
  • Planas Rosselló, Jaime
  • Dourado, N.
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Solids and Structures
Fecha: Marzo 2010
Volumen: 47
Materias:
Palabras Clave Informales: Quasibrittle fracture; R-curve; Cohesive zone model; Bilinear softening function; Energy distribution; Critical opening; Plateau value of the resistance; Cohesive fracture energy
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

For composites and adhesive joints, the determination of the cohesive zone parameters from Double Cantilever Beam specimens loaded with pure moments is now well established and documented. However, for quasibrittle materials used in Civil Engineering such as concrete or wood, the difficulty to apply a pure bending moment lies inappropriated the method used for composites. Nevertheless, the one-to-one correspondence which exists between the R-curve and the softening curve is here revisited and adapted for any kind of specimen geometry and for the bilinear approximation of the softening function, well-known to successfully describe the failure of a wide group of quasibrittle materials. It is shown that even though the connections between the cohesive parameters and the ‘equivalent LEFM’ R-curve are geometry and material dependent, their trends are preserved whatever the specimen geometry and the material are. The outline of a general estimation procedure of the cohesive zone parameters funded on the equivalent LEFM R-curve is proposed.

Más información

ID de Registro: 8507
Identificador DC: http://oa.upm.es/8507/
Identificador OAI: oai:oa.upm.es:8507
Identificador DOI: 10.1016/j.ijsolstr.2009.11.022
URL Oficial: http://www.sciencedirect.com/science/journal/00207683
Depositado por: Memoria Investigacion
Depositado el: 17 Ago 2011 07:56
Ultima Modificación: 20 Abr 2016 17:15
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