Journal ArticleDOI
Ductile fracture modelling of steel plates under tensile and shear dominated states
Yajun Zhang,Yuqing Liu,Fei Yang +2 more
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TLDR
In this paper , a combined linear and power stress-strain law with a shear plastic factor is proposed to characterize the mechanical behavior of steel plates under shear dominated state.About:
This article is published in Journal of Constructional Steel Research.The article was published on 2022-10-01. It has received 3 citations till now. The article focuses on the topics: Shear (geology) & Ultimate tensile strength.read more
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Fracture Response of X80 Pipe Girth Welds under Combined Internal Pressure and Bending Moment
TL;DR: In this paper , the effect of defect size on pipeline fracture performance of girth welds in oil and gas pipelines was analyzed using ABAQUS, and the results showed that the defect depth was more associated with adverse effects than the circumferential length of the defect.
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Steel shear behaviour on bearing strength and failure modes of single-bolt connections
TL;DR: In this article , a finite element (FE) model was used to investigate the bearing strength and failure modes of single-bolt connections, and fracture criterion was incorporated into the FE models to analyze the relationship between bearing strength, fracture deformation, and failure mode.
Journal ArticleDOI
Phenomenological 2D and 3D Models of Ductile Fracture for Girth Weld of X80 Pipeline
TL;DR: In this paper , an uncoupled fracture 2D model with a function of fracture strain and stress triaxiality, two uncouple 3D fracture models, a consider the effect of Lode parameter stress-modified critical strain (LSMCS) model, and an extended Rice-Tracey (ERT) criterion were applied to X80 pipeline girth welds.
References
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Journal ArticleDOI
Continuum Theory of Ductile Rupture by Void Nucleation and Growth: Part I—Yield Criteria and Flow Rules for Porous Ductile Media
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On the ductile enlargement of voids in triaxial stress fields
James R. Rice,D.M. Tracey +1 more
TL;DR: In this article, a variational principle is established to characterize the flow field in an elastically rigid and incompressible plastic material containing an internal void or voids, and an approximate Rayleigh-Ritz procedure is developed and applied to the enlargement of an isolated spherical void in a nonhardening material.
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Analysis of the cup-cone fracture in a round tensile bar
Viggo Tvergaard,Alan Needleman +1 more
TL;DR: In this article, a set of elastic-plastic constitutive relations that account for the nucleation and growth of micro-voids is used to model the failure of a round tensile test specimen.
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A continuous damage mechanics model for ductile fracture
TL;DR: In this paper, a model of isotropic ductile plastic damage based on a continuum damage variable, on the effective stress concept and on thermodynamics is derived, showing a large influence of triaxiality by means of a damage equivalent stress.
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On fracture locus in the equivalent strain and stress triaxiality space
Yingbin Bao,Tomasz Wierzbicki +1 more
TL;DR: In this article, a series of tests including upsetting tests, shear tests and tensile tests on 2024-T351 aluminum alloy providing clues to fracture ductility for a wide range of stress triaxiality was carried out.