Results 141 to 150 of about 2,848 (173)
Some of the next articles are maybe not open access.
No additive effect of combining sumatriptan and olcegepant in the GTN mouse model of migraine
Cephalalgia, 2020Introduction Despite recent advances in migraine treatment there is a need for therapies with higher clinical efficacy and/or fewer side effects. Triptans (5-HT 1B/1D/1F agonists) are essential in the present treatment regime and gepants (CGRP ...
Charlotte Ernstsen +3 more
openaire +3 more sources
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
openaire +1 more source
Notched Specimens Fracture Prediction with an Advanced GTN Model
Key Engineering Materials, 2011This present contribution consists of implementing an advanced GTN damage model as a "User Material subroutine" in the Abaqus FE code. This damage model is based on specific nucleation and growth laws in order to predict the void coalescence properties of the material. When applied, this implementation predicts the damage evolution and the stress state
Fansi Tchonko, Joseph +4 more
openaire +2 more sources
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
Calibration of GTN model for fracture analysis of steel plates with holes
Journal of Constructional Steel ResearchYue Yin
exaly +2 more sources