Dynamic crack growth in nonlocal progressively cavitating solid
type: Item
instance of: scholarly article
title: Dynamic crack growth in nonlocal progressively cavitating solid
zbMATH Open document ID: 0933.74059
DOI: 10.1016/S0997-7538(98)80053-3
author: A. Needleman
author: Viggo Tvergaard
published in: European Journal of Mechanics. A. Solids
publication date: 2000-03-29T00:00:00Z
review text: Dynamic crack growth is analyzed numerically using a nonlocal constitutive formulation for a porous ductile material. The delocalization relates to the void growth and coalescence mechanism, and is incorporated in terms of an integral condition on the rate of increase of the void volume fraction. The material is modeled as elastic-viscoplastic with the thermal softening due to adiabatic heating accounted for. Finite element computations are carried out for edge cracked specimens subject to tensile impact loading. Two values of the material characteristic length and two finite-element discretizations are used in most computations. The effect of the material characteristic length on the crack growth behavior and on the mesh sensitivity of the results is considered. For comparison purposes, results are also obtained for the corresponding local constitutive relation.
Mathematics Subject Classification ID: 74R20
Mathematics Subject Classification ID: 74S05
zbMATH DE Number: 1282974
zbMATH Keywords: elasto-viscoplastic material
zbMATH Keywords: porous ductile material
zbMATH Keywords: delocalization
zbMATH Keywords: thermal softening
zbMATH Keywords: adiabatic heating
zbMATH Keywords: edge cracked specimens
zbMATH Keywords: tensile impact loading
MaRDI profile type: Publication
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description: scientific article; zbMATH DE number 1282974