Title
A variational void coalescence model for ductile metals
Date Issued
01 February 2012
Access level
metadata only access
Resource Type
journal article
Author(s)
Siddiq A.
El Sayed T.
King Abdullah University of Science and Technology (KAUST)
Publisher(s)
Springer Verlag
Abstract
We present a variational void coalescence model that includes all the essential ingredients of failure in ductile porous metals. The model is an extension of the variational void growth model by Weinberg et al. (Comput Mech 37:142-152, 2006). The extended model contains all the deformation phases in ductile porous materials, i.e. elastic deformation, plastic deformation including deviatoric and volumetric (void growth) plasticity followed by damage initiation and evolution due to void coalescence. Parametric studies have been performed to assess the model's dependence on the different input parameters. The model is then validated against uniaxial loading experiments for different materials. We finally show the model's ability to predict the damage mechanisms and fracture surface profile of a notched round bar under tension as observed in experiments. © Springer-Verlag 2011.
Start page
185
End page
195
Volume
49
Issue
2
Language
English
OCDE Knowledge area
Ingeniería de materiales Física y Astronomía
Scopus EID
2-s2.0-84858450673
Source
Computational Mechanics
ISSN of the container
01787675
Sources of information: Directorio de Producción Científica Scopus