Results 11 to 20 of about 23,987,835 (236)
Cohesive GTN model for ductile fracture simulation
Engineering Fracture Mechanics, 2021 The present work addresses the micromechanical modeling and the simulation of crack initiation and propagation in ductile materials failing by void nucleation, growth and coalescence. A cohesive–volumetric approach is used and the overall material behavior is characterized both by a hardening bulk constitutive law and a softening surface traction ...
Noé Brice Nkoumbou Kaptchouang +3 more
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Metals, 2022 Clustering ball spinning (CBS) forming is a novel approach to manufacturing a complex curved surface. In order to explore the forming limit of magnesium alloy in the CBS forming process, the modified GTN model was incorporated into the FE simulation to ...
Zhiqing Hu, Lijia Da, Jia Xi, Xinchen Li
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Experimental Investigation of GTN model parameters of 6061 Al alloy
European Journal of Mechanics - A/Solids, 2020 Abstract This research experimentally determines the Gurson-Tvergaard-Needleman (GTN) model damage mechanics parameters for 6061 Al alloys. Five different heat treatment conditions including T4 (natural aging) and T6 (peak strength) conditions of 6061 Al alloy were investigated.
Yildiz, R. A., Yilmaz, S.
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Metals, 2022 Under warm forming, the damage parameters of extended GTN model are easily affected by temperature, and the failure of materials under warm forming is less studied by using this model. In this paper, based on the extended GTN model, the damage parameters
Xingfeng Liu +6 more
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Multiple pregnancy with complete hydatidiform mole and coexisting normal fetus: systematic review and meta-analysis of clinical outcomes from non-randomized studies. [PDF]
Ultrasound Obstet GynecolABSTRACT Objective Complete hydatidiform mole and coexisting normal fetus (CHMCF) is a rare condition for which there is significant heterogeneity in diagnosis, counseling and management of complications. The objective of this study was to summarize the prevalence of clinical outcomes in reported cases of CHMCF.
Salmeri N +8 more
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Forming Limit Stress Diagram Prediction of Pure Titanium Sheet Based on GTN Model. [PDF]
Materials (Basel), 2019 In this paper, the initial values of damage parameters in the Gurson–Tvergaard–Needleman (GTN) model are determined by a microscopic test combined with empirical formulas, and the final accurate values are determined by finite element reverse calibration.
Huang T +7 more
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Study on Numerical and Experimental Failure Criterion for Formability Prediction of Hastelloy-X Using GTN Model [PDF]
한국정밀공학회지, 2022 Hastelloy-X material is widely used in aircraft engines, furnaces, and chemical process components due to its excellent oxidation resistance and high-temperature strength.
Sohyeon An +4 more
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Anisotropic ductile fracture: experiments, modeling, and numerical simulations
Journal of Materials Research and Technology, 2022 The continuous hot rolling process induces anisotropy in the plastic yield and flow and results in an anisotropic ductile fracture. In this study, experiments, including uniaxial in-plane tension tests and shear tests of butterfly specimens along ...
Hongfei Wu +3 more
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A consistent use of the Gurson-Tvergaard-Needleman damage model for the R-curve calculation
Fracture and Structural Integrity, 2013 The scope of the present work is to point out a consistent simulation procedure for the quasi-static fracture processes, starting from the micro-structural characteristics of the material.
Gabriele Cricrì
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Fracture and Structural Integrity, 2019 This work is devoted to the application of the micromechanical Gurson-Tvergaard-Needleman (GTN) model to study the ductile tearing of 12NiCr6 steel. GTN model is widely used to describe the three stages of ductile tearing: nucleation, growth and the ...
Mohamed Hadj Miloud +2 more
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