Journal ArticleDOI
A modified dugdale model for crack tip plasticity and its related problems
Tian Jian Lu,C.L. Chow +1 more
TLDR
In this article, the von Mises yield criterion is adopted instead of the Tresca yield criterion for crack tip plasticity, and the modified model predicts that cyclic deformation behaviors at a crack tip are dependent not only on the amplitude of load fluctuations but also on the mean level at which the load is being cycled, revealing that at least two parameters are necessitated if the rate of fatigue crack propagation is to be predicted more accurately.About:
This article is published in Engineering Fracture Mechanics.The article was published on 1990-01-01. It has received 26 citations till now. The article focuses on the topics: Crack closure & Crack tip opening displacement.read more
Citations
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Journal ArticleDOI
Plastic zone size in fatigue cracking
TL;DR: In this article, the effects of specimen thickness on crack tip deformation and fatigue crack growth rate (FCGR) were investigated on the specimens of Type 304 stainless steel and Inconel 718.
Journal ArticleDOI
Cyclic j-integral in relation to fatigue crack initiation and propagation
C.L. Chow,Tian Jian Lu +1 more
TL;DR: In this article, the generalized driving force attached to a fatigue crack tip is in the first instance re-examined with the introduction of a new cyclic J-integral.
Journal ArticleDOI
A low cycle fatigue model of a short-fibre reinforced 6061 aluminium alloy metal matrix composite
TL;DR: In this article, a low cycle fatigue model was developed to predict the fatigue life of both the unreinforced aluminium alloy and the short-fibre reinforced aluminium alloy metal-matrix composites based solely on crack propagation from microstructural features.
Journal ArticleDOI
Fatigue crack opening stress based on the strip-yield model
JH Kim,Soon-Bok Lee +1 more
TL;DR: In this paper, the effect of transverse stress on the fatigue crack closure was evaluated using the modified strip-yield model based on the Dugdale model and two-dimensional approximate weight function method.
Journal ArticleDOI
Low cycle fatigue crack growth and life prediction of short-fibre reinforced aluminium matrix composites
TL;DR: In this paper, a model is developed to predict the low cycle fatigue crack growth and life of short-fibre reinforced aluminium-matrix composites based on the assumption that there is a fatigue-damaged zone ahead of the crack tip in which the local cyclic stress level approaches the ultimate tensile strength of the composite and the actual degradation process of composite.
References
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Journal ArticleDOI
A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks
TL;DR: In this paper, an integral is exhibited which has the same value for all paths surrounding a class of notches in two-dimensional deformation fields of linear or non-linear elastic materials.
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.