Journal ArticleDOI
A ductile fracture analysis using a local damage model
N. Benseddiq,Abdellatif Imad +1 more
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TLDR
In this article, the Gurson-Tvergaard-needleman (GTN) model was used to investigate ductile tearing and the sensitivity of the model parameters has been examined from literature data.About:
This article is published in International Journal of Pressure Vessels and Piping.The article was published on 2008-04-01. It has received 124 citations till now. The article focuses on the topics: Fracture mechanics.read more
Citations
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Parameter identification of a mechanical ductile damage using Artificial Neural Networks in sheet metal forming
TL;DR: In this article, many experimental tests and finite element model computation are performed to predict the damage evolution in notched tensile specimen of sheet metal using the Gurson-Tvergaard-Needleman (GTN) model.
Journal ArticleDOI
The Sandia Fracture Challenge: blind round robin predictions of ductile tearing
Brad L. Boyce,Sharlotte Kramer,H. E. Fang,Theresa Elena Cordova,Michael K. Neilsen,Kristin Dion,Amy Kathleen Kaczmarowski,Erin Karasz,Liang Xue,Andrew J. Gross,Ali Ghahremaninezhad,Krishnaswa Ravi-Chandar,Shih-Po Lin,Sheng Wei Chi,Jiun-Shyan Chen,E. Yreux,Marcus Rüter,Dong Qian,Zhong Zhou,Sagar Bhamare,Devin T. O'Connor,S. Tang,Khalil I. Elkhodary,Jifeng Zhao,Jacob D. Hochhalter,A. R. Cerrone,Anthony R. Ingraffea,Paul A. Wawrzynek,B.J. Carter,John M Emery,M G Veilleux,Pengfei Yang,Yong Gan,Xiong Zhang,Zhen Chen,Zhen Chen,Erdogan Madenci,Bahattin Kilic,Tingting Zhang,E. Fang,P. Liu,Jim Lua,Ken Nahshon,M. Miraglia,J. Cruce,R. DeFrese,E. T. Moyer,Steffen Brinckmann,L. Quinkert,Keunhwan Pack,Meng Luo,Tomasz Wierzbicki +51 more
TL;DR: Sandia National Laboratories, in partnership with US National Science Foundation and Naval Surface Warfare Center Carderock Division, launched a computational challenge in mid-summer, 2012 to predict crack initiation and propagation in a simple but novel geometry fabricated from a common off-the-shelf commercial engineering alloy as mentioned in this paper.
Journal ArticleDOI
Ductile failure behavior of polycrystalline Al 6061-T6
TL;DR: In this article, the authors examined polycrystalline aluminum alloys through uniaxial tension and notched tension experiments to identify the onset and evolution of damage processes during deformation and failure of these alloys.
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Numerical determination of the forming limit curves of anisotropic sheet metals using GTN damage model
TL;DR: In this paper, the authors used the Gurson-Tvergaard-Needleman (GTN) damage model to determine the forming limit curve of anisotropic sheet metals.
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Unified characterisation of in‐plane and out‐of‐plane constraint based on crack‐tip equivalent plastic strain
TL;DR: In this paper, a unified measure and characterisation parameter of in-plane and out-of-plane constraints based on crack-tip equivalent plastic strain has been investigated, which can be used to determine constraint-dependent fracture toughness of materials.
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
Journal ArticleDOI
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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Void growth and coalescence in porous plastic solids
J. Koplik,Alan Needleman +1 more
TL;DR: In this article, a boundary value problem simulating a periodic array of spherical voids in an isotropically hardening elastic-viscoplastic matrix is analyzed, showing a shift from a general axisymmetric deformation state to a mode of uniaxial straining at which point the plastic deformation localizes to the ligament between neighboring voids.