Results 201 to 210 of about 23,805,970 (249)

A shear modified GTN model based on stress degradation method for predicting ductile fracture

Modelling and Simulation in Materials Science and Engineering, 2023
The Gurson–Tvergaard–Needleman (GTN) model has provided a powerful description of the nucleation growth and coalescence of micro voids, but it has limitations in simulating shear fracture due to the absence of a description of shear localization behavior.
Fanlei Min, K. Gao, Xiaojun Zhang, Wu Wei, Peng Qi, Xiaolan Wu, S. Wen, Hui Huang, Zuoren Nie, Deijing Zhou   +9 more
semanticscholar   +1 more source

Anisotropic mechanical behavior prediction of aluminum alloy sheet based on an anisotropic GTN model: Modeling, simulation and experimental investigation

Mechanics of Advanced Materials and Structures, 2022
The rolled aluminum alloy sheets usually have anisotropic properties that affect its ductile fracture behavior. In order to study the plastic anisotropy and ductile fracture behavior of aluminum alloy 6016 sheet, the Hill48 anisotropic yield criterion is
Zao He, Hao Zhu, Yumei Hu
semanticscholar   +1 more source

Determining the Parameters of Gurson-Tvergaard-Needleman (GTN) Model for Predicting the Failure of Wrought and Fused Filament Fabricated 17-4 PH Stainless Steel

Journal of manufacturing science and engineering
Metal additive manufacturing is an emerging technology for creating metallic parts, with metal fused filament fabrication (FFF) rapidly gaining popularity due to its cost-effectiveness.
Bita Porrang, Muhammad Asim Ghaffar, S. A. Hosseini   +2 more
semanticscholar   +1 more source

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

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

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

Assessing gradient parameters for damage control in notched plates: Finite element analysis of locally functionally graded materials using the Gurson-Tvergaard-needleman (GTN) model

Mechanics based design of structures and machines
This study investigates functionally graded materials (FGMs) as reinforcement for notched plates prone to crack propagation. Using a novel meshing technique and the Gurson-Tvergaard-Needleman damage model within ABAQUS-Explicit, we explore how various ...
Amir Slamene, Billel Hamza, Mohamed Mokhtari, Sadek Gouasmi, Rafik Medjahed, Abderraouf Ousidhoum   +5 more
semanticscholar   +1 more source

Damage analysis of functionally graded materials: A finite element investigation utilizing the Gurson–Tvergaard–Needleman (GTN) model for notched plates

Mechanics based design of structures and machines
This study examines the mechanical behavior of notched materials under severe uniaxial monotonic loading until failure. Instead of focusing on the structural damages caused by notches, this study explores the complex loading experienced by notches ...
Amir Slamene, Mohamed Mokhtari, Billel Hamza, Sadek Gouasmi, Fatna Telli, Abderraouf Ousidhoum   +5 more
semanticscholar   +1 more source

Experimental Investigation of GTN model parameters of 6061 Al alloy

, 2020
This research experimentally determines the Gurson-Tvergaard-Needleman (GTN) model damage mechanics parameters for 6061 Al alloys. Five different heat treatment conditions including T4 (natural aging) and T6 (peak strength) conditions of 6061 Al alloy ...
R. Yildiz, Ş. Yilmaz
semanticscholar   +1 more source