Results 181 to 190 of about 548,206 (222)

Failure analysis of AZ31 magnesium alloy sheets based on the extended GTN damage model

International Journal of Minerals, Metallurgy, and Materials, 2013
Based on the Gurson-Tvergaard-Needleman (GTN) model and Hill’s quadratic anisotropic yield criterion, a combined experimental-numerical study on fracture initiation in the process of thermal stamping of Mg alloy AZ31 sheets was carried out. The aim is to predict the formability of thermal stamping of the Mg alloy sheets at different temperatures.
Rui-ze Wang, Zhang-hua Chen, Yu-jie Li, Chao-fang Dong   +3 more
openaire   +2 more sources

Ductile fracture simulation of cold-formed high strength steel using GTN damage model

Journal of Constructional Steel Research, 2021
Rui Yan, Haohui Xin, Milan Veljkovic
exaly   +2 more sources

Fatigue crack growth: Validation of the Kmax-ΔK approach using the GTN damage model

International Journal of Fatigue, 2023
E.R. Sérgio, F.V. Antunes, D. Kujawski, D.M. Neto   +3 more
openaire   +2 more sources

Failure Prediction of Superheater Tubes in Rotary Tube Bending Process Using GTN Damage Model

Transactions of the Indian Institute of Metals, 2018
Superheater tubes are one of the main parts of boilers which are subjected to high temperature and stress. Fracture is one of the main defects which happen during the forming process of these tubes. In the present study, tube rotary draw bending (RDB) process is used for forming of superheater tube. Gurson–Tvergaard–Needleman (GTN) damage model is used
R. Safdarian
openaire   +2 more sources

AN ANISOTROPIC EXTENSION FOR A THERMOVISCOPLASTIC GTN DUCTILE DAMAGE MODEL

International Journal for Multiscale Computational Engineering, 2023
In this work, a thermoviscoplastic GTN ductile damage model is extended to account for anisotropic plastic behavior. The novel feature of the proposed model is the enrichment of a GTN model, with the Hill's yield criterion accounting for hardening, softening, strain-rate effect, plastic work heating, thermal diffusion, and void shearing mechanism.
João Paulo Pascon, Haim Waisman
openaire   +1 more source

Numerical determination of the forming limit curves of anisotropic sheet metals using GTN damage model

Journal of Materials Processing Technology, 2015
Abdolvahed Kami, Dorel Banabic
exaly   +2 more sources

An extended GTN model for indentation-induced damage

Computational Materials Science, 2017
Abstract The damage of metallic alloys induced by tensile deformation can be well described by Gurson-Tvergaard-Needleman (GTN) model. However, damage growth under intense shear loading, which has been found in micro-/macro-indentation tests, cannot be captured by this model.
Youbin Chen, Chunyu Zhang, Christophe Varé   +2 more
openaire   +1 more source

Parameter identification of GTN damage model using response surface methodology for single point incremental sheet forming of IF steel

Advances in Materials and Processing Technologies, 2021
The single point incremental sheet forming (SPIF) is an advanced sheet metal forming technique, also known as dieless sheet forming. Formability in incremental sheet forming is defined by the maximum formable wall angle or the depth of forming.
S. More, Abhishek Kumar, K. Narasimhan
semanticscholar   +1 more source

Prediction of damage evolution behavior in ductile metals by Lemaitre criterion and comparison with GTN and EGTN damage models

Mechanics Based Design of Structures and Machines, 2021
Prediction of damage evolution in ductile metals is among the most important challenges ahead of researchers.
M. S. Sadeghi Nezhad, F. Haji Aboutalebi
openaire   +1 more source

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