Results 171 to 180 of about 23,987,835 (236)

The cyclic GTN model for ULCF fracture analysis of Q355 steel

Engineering Fracture Mechanics
Wenjia Qin, Yue Yin, Yunqi Zhang, Tao Ma, Song Zhang   +4 more
exaly   +3 more sources

Fracture investigation of the shape memory alloy using GTN model

Engineering Fracture Mechanics, 2019
Abstract 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
exaly   +2 more sources

Application of the GTN model to predict the forming limit diagram of IF-Steel

Journal of Mechanical Science and Technology, 2012
Forming limit diagrams (FLDs) are extensively used in industries, particularly the auto industry. The establishment of these diagrams using a predictive approach can lead to reduction in both cost and time. In the present work, Gurson-Tvergaard-Needleman (GTN), a porosity-based model, was used to predict the FLD of an interstitial-free steel via finite
Mahmoud Abbasi, Mostafa Ketabchi
exaly   +2 more sources

On the identification and uniqueness of constitutive parameters for a non-local GTN-model

Engineering Fracture Mechanics, 2020
Abstract 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, Geralf Hütter, Meinhard Kuna   +2 more
openaire   +2 more sources

A cyclic GTN model for ultra-low cycle fatigue analysis of structural steels

International Journal of Fatigue, 2023
Yue Yin
exaly   +2 more sources

An improved shear modified GTN model for ductile fracture of aluminium alloys under different stress states and its parameters identification

International Journal of Mechanical Sciences, 2021
To solve the problem that the original GTN model cannot accurately simulate ductile fracture of material under low stress triaxiality, many scholars have made shear improvement to it, but these shear modified GTN models have their own advantages and ...
Hao Zhu
exaly   +2 more sources

The modified GTN model for fracture of nickel-based superalloys considering size effect and healing effect in pulsed current assisted deformation

International Journal of Plasticity, 2023
Rui Zhao, Bao Meng
exaly   +2 more sources

Benchmark Analysis by Beremin Model and GTN Model in CAF Subcommittee

Volume 1: Codes and Standards, 2021
Abstract In order to establish a guideline for fracture evaluation without excessive conservatism by considering plastic constraint in the ductile-brittle transition temperature (DBTT) region, the CAF (Constraint-Based Assessment of Fracture in Ductile-Brittle Transition Temperature Region) subcommittee has been launched in 2018 in the ...
Takatoshi Hirota, Yasuto Nagoshi, Kiminobu Hojo, Hiroshi Okada, Akiyuki Takahashi, Jinya Katsuyama, Takashi Ueda, Takuya Ogawa, Kenji Yashirodai, Mitsuru Ohata, Fumiyoshi Minami   +10 more
openaire   +1 more source

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

Micromechanical modelling of weldments using GTN model

International Journal of Fracture, 2010
Non-transferability of fracture data from specimen level to component level is a serious limitation of conventional fracture mechanics, as fracture resistance data obtained is largely geometry dependant. The difficulty is largely overcome by GTN model which models the drop in load carrying capacity of a material with the increase in plastic strain ...
R. Chhibber, P. Biswas, N. Arora, S. R. Gupta, B. K. Dutta   +4 more
openaire   +1 more source