Numerical Simulations of Void Linkage in Model Materials using a Nonlocal Ductile Damage Approximation

Weck, Arnaud; Segurado Escudero, Javier; Llorca Martinez, Francisco Javier; Wilkinson, David y Böhm, Helmut (2007). Numerical Simulations of Void Linkage in Model Materials using a Nonlocal Ductile Damage Approximation. "International Journal of Fracture", v. 148 (n. 3); pp. 205-219. ISSN 0376-9429. https://doi.org/10.1007/s10704-008-9195-5.

Descripción

Título: Numerical Simulations of Void Linkage in Model Materials using a Nonlocal Ductile Damage Approximation
Autor/es:
  • Weck, Arnaud
  • Segurado Escudero, Javier
  • Llorca Martinez, Francisco Javier
  • Wilkinson, David
  • Böhm, Helmut
Tipo de Documento: Artículo
Título de Revista/Publicación: International Journal of Fracture
Fecha: Diciembre 2007
Volumen: 148
Materias:
Palabras Clave Informales: Linkage • Coalescence • Ductile fracture • Nonlocal damage models • Finite element • Laser drilled model material.
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (2MB) | Vista Previa

Resumen

Experiments on the growth and linkage of 10 μm diameter holes laser drilled in high precision patterns into Al-plates were modelled with finite elements. The simulations used geometries identical to those of the experiments and incorporated ductile damage by element removal under the control of a ductile damage indicator based on the micromechanical studies of Rice and Tracey. A regularization of the problem was achieved through an integral-type nonlocal model based on the smoothing of the rate of a damage indicator D over a characteristic length L. The simulation does not predict the experimentally observed damage acceleration either in the case where no damage is included or when only a local damage model is used. However, the full three-dimensional simulations based on the nonlocal damage methodology do predict both the failure path and the failure strain at void linkage for almost all configurations studied. For the cases considered the critical parameter controlling the local deformations at void linkage was found to be the ratio between hole diameter and hole spacing.

Más información

ID de Registro: 2583
Identificador DC: http://oa.upm.es/2583/
Identificador OAI: oai:oa.upm.es:2583
Identificador DOI: 10.1007/s10704-008-9195-5
URL Oficial: http://www.springerlink.com/content/l80540021n06/?p=396f955ab75b468a8dc273152f24483b&pi=24
Depositado por: Memoria Investigacion
Depositado el: 23 Mar 2010 09:56
Ultima Modificación: 20 Abr 2016 12:14
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM