Results 191 to 200 of about 23,987,835 (236)

Parameter calibration of anisotropic GTN model and forming limit for S600 aluminum alloy sheet

Engineering Research Express
High strength aluminum alloy sheet has obvious anisotropic characteristics and negligible necking in plastic deformation, making its fracture judgment in forming process more difficult than other metals.
Xiaohua Chen, Zhanshan Wang, Xuejian Zhang, Guojiang Dong, Zhuoyun Yang, Shuang Yu, Yang Wang, Yiru Yang   +7 more
semanticscholar   +1 more source

Notched Specimens Fracture Prediction with an Advanced GTN Model

Key Engineering Materials, 2011
This 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, Ben Bettaieb, Mohamed, Balan, Tudor, Lemoine, Xavier, Habraken, Anne   +4 more
openaire   +2 more sources

Ductile Fracture Prediction for Ti6Al4V Alloy Based on the Shear-Modified GTN Model and Machine Learning

Metals
To investigate the failure behavior of Ti6Al4V alloy under complex stress states, this study designed tensile specimens with different notches to achieve high, medium, and low stress triaxiality conditions.
Tao Shen, Biao Li, Yuxuan Fang
semanticscholar   +1 more source

Application of the modified GTN model in predicting Taylor impact fracture of 7XXX aluminum alloy

Computers and Structures
Fanlei, Kunyuan Gao
exaly   +2 more sources

Comparison of GTN damage models for sheet metal forming

Journal of Shanghai Jiaotong University (Science), 2008
The 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

Efficient parameters identification of a modified GTN model of ductile fracture using machine learning

, 2021
The ductile fracture behavior of metallic materials is usually coupled with complex stress states. In order to describe the facture behavior of metallic materials under a broad range of stress states, a modified Gurson-Tvergaard-Needleman damage model ...
Dong Chen, Yazhi Li, Xuan Yang, Wei Jiang, Lingxiao Guan   +4 more
semanticscholar   +1 more source

Study on the Applicability of GTN Model on Fracture Evaluation for Plate Specimen With a Surface Crack Using a BWR Reactor Pressure Vessel Material

Volume 5: Materials & Fabrication, 2023
Cases of stress corrosion cracking (SCC) in Ni-base alloy weld metals welded to the low alloy steel (LAS) in reactor pressure vessel (RPV) components have led to discussions on the possibility of SCC propagating into the RPV.
T. Ogawa, Takahiro Hayashi, Shuichi Yoshida, M. Itatani, Toshiyuki Saito   +4 more
semanticscholar   +1 more source

Parameters Identification for GTN Model and Their Verification on 42CrMo4 Steel

Materials Science Forum, 2005
The 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

An extended GTN model for low stress triaxiality and application in spinning forming

Journal of Materials Processing Technology, 2019
The Gurson-Tvergaard-Needleman (GTN) models are effective to predict damage evolution and ductile fracture during plastic deformation, while the existing modified GTN models mainly focus on the range of stress triaxiality between −1/3  η ...
Wenchen Xu, Debin Shan, Bo Cheng Jin
exaly   +2 more sources

Evaluation of Ductile Fracture Behavior Using GTN Model

Volume 1: Codes and Standards, 2014
Ductile 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, Fuminori Iwamatsu, Katsumasa Miyazaki   +2 more
openaire   +1 more source