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GTN Damage Model Considering Anisotropy and Shear Behavior and Application in Forming Limit Prediction

Journal of Mechanical Engineering
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On the Utilization of Shear Modified GTN Damage Model in Cold Rolling

Applied Mechanics and Materials, 2015
Edge cracking is a commonly observed phenomenon in cold rolling process, but researchers appear to be far from fully understanding its failure mechanism due to the complex stress conditions of steel strip under the rolling condition. In this research, the shear modified GTN damage model coupled with Nahshon-Hutchinson shear damage mechanism was applied
Hong Liang Pan
exaly   +2 more sources

Identification of material parameters of a shear modified GTN damage model by small punch test

International Journal of Fracture, 2020
A new approach was put forward to identify the damage parameters of the shear modified GTN damage model proposed by Nahshon and Hutchinson (Eur J Mech Solid 27:10–17, 2008) by combining the artificial neural networks algorithm and small punch test. The factorial design method was used to analyze the influence of the parameters on the shape of load ...
Quan Sun, Lu Yebo
exaly   +2 more sources

Experimental and numerical investigation of ductile fracture using GTN damage model on in-situ tensile tests

International Journal of Mechanical Sciences, 2019
Abstract The present work is devoted to experimental and numerical investigation of in situ tensile tests to recognize the mechanisms of ductile fracture under different stress states. The GTN model, which is a micromechanical based damage model, was used for numerical simulations.
Kamran Nikbin
exaly   +2 more sources

Parameter Calibration of GTN Damage Model and Formability Analysis of 22MnB5 in Hot Forming Process

Journal of Materials Engineering and Performance, 2017
Hot forming of high strength steel at elevated temperatures is an attractive technology to achieve the lightweight of vehicle body. The mechanical behavior of boron steel 22MnB5 strongly depends on the variation of temperature which makes the process design more difficult.
Liang Ying, Dantong Wang, Ping Hu
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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
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Ductile fracture prediction of HPDC aluminum alloy based on a shear-modified GTN damage model

Engineering Fracture Mechanics, 2023
Sebastian Münstermann, Fuhui Shen, Jiang Zheng   +2 more
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
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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
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