Journal ArticleDOI
Microcrack coalescence and macroscopic crack growth initiation in brittle solids
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TLDR
In this paper, the effect of microcracks on crack growth initiation in brittle solids was investigated with a view to determining the range of dominance of each mechanism, and the extent of shielding of the crack tip by the intervening micro-cracks was estimated under isotropic damage conditions.About:
This article is published in International Journal of Solids and Structures.The article was published on 1988-01-01. It has received 183 citations till now. The article focuses on the topics: Crack growth resistance curve & Crack closure.read more
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Journal ArticleDOI
Computational modelling of impact damage in brittle materials
G. T. Camacho,Michael Ortiz +1 more
TL;DR: In this paper, a Lagrangian finite element method of fracture and fragmentation in brittle materials is developed, where a cohesive-law fracture model is used to propagate multiple cracks along arbitrary paths.
Journal ArticleDOI
Finite-deformation irreversible cohesive elements for three-dimensional crack-propagation analysis
Michael Ortiz,Anna Pandolfi +1 more
TL;DR: In this paper, a three-dimensional finite deformation cohesive element and a class of irreversible cohesive laws are proposed to track dynamic growing cracks in a drop-weight dynamic fracture test.
Journal ArticleDOI
Nonlocal integral formulations of plasticity and damage: Survey of progress
Zdenek P. Bazant,Milan Jirásek +1 more
TL;DR: The nonlocal continuum concept has emerged as an effective means for regularizing the boundary value problems with strain softening, capturing the size effects and avoiding spurious localization that gives rise to pathological mesh sensitivity in numerical computations as mentioned in this paper.
Journal ArticleDOI
Effects of non-planarity on the mixed mode fracture resistance of bimaterial interfaces
A.G Evans,John W. Hutchinson +1 more
TL;DR: In this paper, the effects of non-planarity on the fracture resistance locus of interfaces has been investigated using a simple model of contacting facets along the crack surface, which resist the motion of the crack surfaces by means of friction and locking and thereby modify the energy release rate at the crack front.
Journal ArticleDOI
Micromechanical Model for Simulating the Fracture Process of Rock
Wancheng Zhu,Chunan Tang +1 more
TL;DR: In this article, a micromechanical model is proposed to study the deformation and failure process of rock based on knowledge of heterogeneity of rock at the mesoscopic level, and a numerical simulation program named Rock Failure Process Analysis Code (RFPA) is developed.
References
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Journal ArticleDOI
Yielding of steel sheets containing slits
TL;DR: In this article, a relation between extent of plastic yielding and external load applied was investigated, and panels containing internal and edge slits were loaded in tension and lengths of plastic zones were measured.
Book ChapterDOI
The mathematical theory of equilibrium cracks in brittle fracture
TL;DR: In this paper, the authors present a unified view of the way basic problems in the theory of equilibrium cracks are formulated and discuss the results obtained thereby, and the object of the theory is the study of the equilibrium of solids in the presence of cracks.
Journal ArticleDOI
Elastic moduli of a cracked solid
TL;DR: In this paper, a self-consistent method for the elastic moduli of bodies containing randomly distributed flat cracks, with or without fluid in their interiors, is proposed and general concepts are outlined for arbitrary cracks and explicit derivations together with numerical results are given.
Journal ArticleDOI
Continuum theory of dilatant transformation toughening in ceramics
TL;DR: In this paper, a continuum description is introduced for an elastic solid which contains particles that undergo an irreversible stress-induced dilatant transformation, and the behaviors of the composite solid considered range from abrupt complete transformation at a critical mean stress to strain controlled transformation at constant stress.
Journal ArticleDOI
Crack tip shielding by micro-cracking in brittle solids
TL;DR: In this article, the effect of profuse micro-cracking at the tip of a macroscopic crack is studied with emphasis on the reduction in stress intensity, or shielding, within the microcrack region.