Journal ArticleDOI
A Cohesive model of fatigue crack growth
TLDR
In this article, the use of cohesive theories of fracture, in conjunction with the explicit resolution of the near-tip plastic fields and the enforcement of closure as a contact constraint, for the purpose of fatigue-life prediction is investigated.Abstract:
We investigate the use of cohesive theories of fracture, in conjunction with the explicit resolution of the near-tip plastic fields and the enforcement of closure as a contact constraint, for the purpose of fatigue-life prediction. An important characteristic of the cohesive laws considered here is that they exhibit unloading-reloading hysteresis. This feature has the important consequence of preventing shakedown and allowing for steady crack growth. Our calculations demonstrate that the theory is capable of a unified treatment of long cracks under constant-amplitude loading, short cracks and the effect of overloads, without ad hoc corrections or tuning.read more
Citations
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Book
The Variational Approach to Fracture
TL;DR: In this article, a weak variational evolution is proposed for 1D traction on a fiber reinforced matrix, and a variational formulation for fatigue is presented, which is based on the soft belly of Griffith's formulation.
Journal ArticleDOI
Self-healing polymeric materials: A review of recent developments
TL;DR: An overview of various self-healing concepts for polymeric materials published over the last 15 years is presented in this article, where Fracture mechanics of polymeric material and traditional methods of repairing damages in these materials are described to provide context for the topic.
Journal ArticleDOI
Simulation of delamination in composites under high-cycle fatigue
TL;DR: In this article, a damage model for the simulation of delamination propagation under high-cycle fatigue loading is proposed, based on a cohesive law that links fracture and damage mechanics to establish the evolution of the damage variable in terms of the crack growth rate.
Journal ArticleDOI
A generalized Paris' law for fatigue crack growth
TL;DR: In this article, an extension of the celebrated Paris law for crack propagation is given to take into account some of the deviations from the power-law regime in a simple manner using the Wohler SN curve of the material, suggesting a more general ''unified law''.
Journal ArticleDOI
Phase field modeling of quasi-static and dynamic crack propagation: COMSOL implementation and case studies
TL;DR: The authors aim to devise a simple and efficient implementation of phase-field model for the modelling of quasi-static and dynamic fracture in the general purpose commercial software developer, COMSOL Multiphysics.
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.
Book
Fatigue of materials
TL;DR: In this article, the cyclic deformation and fatigue crack initiation in polycrystalline ductile solids was studied and a total-life approach was proposed to deal with the problem.
Journal ArticleDOI
Numerical simulations of fast crack growth in brittle solids
Xiaopeng Xu,Alan Needleman +1 more
TL;DR: In this article, a model of dynamic crack growth is presented for a plane strain block with an initial central crack subject to tensile loading, where crack branching emerges as a natural outcome of the initial-boundary value problem solution, without any ad hoc assumption regarding branching criteria.