Results 161 to 170 of about 13,842,156 (196)
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Application of GTN Model in Tensile Fracture of Pipeline Steel
Key Engineering Materials, 2018In this paper, the macroscopic mechanical behavior of tensile fracture of X70 pipeline steel is combined with the evolution of mesoscopic pores. The ABAQUS finite element software was used to analyze the variation of pore volume fraction in the tensile failure process of unilateral notched specimens with Gurson-Tvergaard-Needleman (GTN) mesoscopic ...
Ye Da Lian +3 more
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Comparison of GTN damage models for sheet metal forming
Journal of Shanghai Jiaotong University (Science), 2008The Gurson-Tvergaard-Needleman (GTN) damage model was developed basing on anisotropic yield criterion to predict the damage evolution for anisotropic voided ductile materials. Hill’s quadratic anisotropic yield criterion (1948) and Barlat’s 3-component anisotropic yield criterion (1989) were used to describe the anisotropy of the matrix.
Zhi-ying Chen, Xiang-huai Dong
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Evaluation of Ductile Fracture Behavior Using GTN Model
Volume 1: Codes and Standards, 2014Ductile fracture behavior using GTN (Gurson-Tvergaard-Needleman) model in commercial FEA code was evaluated. The material properties of the GTN model for Type 304 SS were experimentally identified. Smooth-bar and notched-bar specimens were subjected to monotonic loading by tensile test, and load-displacement curves were measured. Then, the tensile test
Hidekazu Takazawa +2 more
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No central action of CGRP antagonising drugs in the GTN mouse model of migraine
Cephalalgia, 2020Introduction Clinically, calcitonin gene-related peptide antagonising drugs are recognized as effective in migraine treatment, but their site of action is debated. Only a small fraction of these compounds pass the blood-brain barrier and accesses the central nervous system.
Sarah L Christensen +3 more
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A complete GTN model for prediction of ductile failure of pipe
Journal of Materials Science, 2008The micro mechanical model by Gurson–Tvergaard–Needleman is widely used for the prediction of ductile fracture. Some material properties (Gurson parameters) used as material input in this model for simulation are estimated experimentally from specimen level.
S. Acharyya, S. Dhar
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The cyclic GTN model for ULCF fracture analysis of Q355 steel
Engineering Fracture MechanicsYue Yin
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Fracture investigation of the shape memory alloy using GTN model
Engineering Fracture Mechanics, 2019Abstract In this study, a constitutive model is proposed to investigate the pseudoelastic-plastic behavior of the shape memory alloys, SMAs, up to fracture. The proposed model is based on the Boyd and Lagoudas phase transformation model which is extended to take into account the plastic deformation and the fracture behavior of the SMAs by using the ...
George Z Voyiadjis
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Parameters Identification for GTN Model and Their Verification on 42CrMo4 Steel
Materials Science Forum, 2005The base of this paper is exact measurement of deformation and fracture material characteristics in laboratory, evaluation of these parameters and their application in models of finite element analysis modelling the fracture behaviour of components with defects. The base of the work is dealing with ductile fracture of forget steel 42CrMo4.
Vladislav Kozák, Libor Vlček
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Cohesive Zone Model and GTN Model Collation for Ductile Crack Growth
Materials Science Forum, 2007The micromechanical modelling encounters a problem that is different from basic assumptions of continuum mechanics. The material is not uniform on the microscale level and the material within an element has its own complex microstructure. Therefore the concept of a representative volume element (RVE) has been introduced. The general advantage, compared
Vladislav Kozák +2 more
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On the identification and uniqueness of constitutive parameters for a non-local GTN-model
Engineering Fracture Mechanics, 2020Abstract The present study proposes a parameter identification and calibration strategy for a specific non-local GTN-model, which has been developed to circumvent spurious mesh dependency during simulation of ductile failure. The parameter calibration strategy is applied to an experimental database of a pressure vessel steel tested at moderate to ...
Andreas Seupel +2 more
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