Results 41 to 50 of about 18,643,584 (142)

Damage evolution of 7075 aluminum alloy basing the Gurson Tvergaard Needleman model under high temperature conditions

Journal of Materials Research and Technology, 2022
Based on the Gurson-Tvergaard-Needleman (GTN) damage model, the damage evolution and ductile fracture of 7075 aluminum alloy sheets during the tensile process were predicted. First, the true stress–strain curve and micro morphology of 7075 aluminum alloy
Hongchao Ji, Zheng Ma, Xiaomin Huang, Wenchao Xiao, Baoyu Wang   +4 more
doaj   +1 more source

Quantitative Anisotropic Damage Mechanism in a Forged Aluminum Alloy Studied by Synchrotron Tomography and Finite Element Simulations

Advances in Materials Science and Engineering, 2019
A highly anisotropic toughness behavior has been revealed on a forged AA6061 aluminum alloy by toughness tests with CT specimens. The toughness values with specimens loaded on the longitudinal direction are larger than that loaded on the transverse ...
Yang Shen, Thilo F. Morgeneyer, Jérôme Garnier, Lucien Allais, Lukas Helfen, Jérôme Crépin   +5 more
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Comparative Numerical Analysis of Sheet Formed into a V-Shaped Die Using Conventional and Electromagnetic Forming Processes

Advances in Mechanical Engineering, 2014
A comparative and numerical study on the formability of a sheet formed into a V-shaped die using a conventional stamping operation and an electromagnetic forming (EMF) process was performed. To evaluate the damage evolution and failure prediction using a
Jeong Kim, Hak-Gon Noh, Woo-Jin Song, Beom-Soo Kang   +3 more
doaj   +1 more source

GTN Model-Based Material Parameters of AZ31 Magnesium Sheet at Various Temperatures by Means of SEM In-Situ Testing

Crystals, 2020
Magnesium alloys are primarily associated with complex forming mechanisms, which yield ductility at high temperatures. In sheet metal forming, high triaxiality stress states that favor the ductile damage mechanisms of void formation and growth are known ...
Thorsten Henseler, Shmuel Osovski, Madlen Ullmann, Rudolf Kawalla, Ulrich Prahl   +4 more
doaj   +1 more source

Numerical Study on Ductile Failure Behaviours of Steel Structures under Quasi-Static Punch Loading

Journal of Marine Science and Engineering, 2023
A reliable finite element procedure to simulate shear-dominated ductile fractures in large-scale, thin-walled steel structures is still evolving primarily due to the challenges in determining the failure criterion of metal materials under complex stress ...
Wei Cai, Zhihui Zhou, Xudong Qian, Dongfeng Cao, Shuxin Li, Ling Zhu, Haixiao Hu   +6 more
doaj   +1 more source

Numerical Study about the Influence of Superimposed Hydrostatic Pressure on Shear Damage Mechanism in Sheet Metals

Metals, 2021
It is generally accepted that the superimposed hydrostatic pressure increases fracture strain in sheet metal and mode of fracture changes with applying pressure.
Mohammadmehdi Shahzamanian, Chris Thomsen, Amir Partovi, Zhutian Xu, Peidong Wu   +4 more
doaj   +1 more source

Failure analysis based on microvoid growth for sheet metal during uniaxial and biaxial tensile tests [PDF]

, 2013
The aim of the presented investigations is to perform an analysis of fracture and instability during simple and complex load testing by addressing the influence of ductile damage evolution in necking processes.
Abbassi, Fethi, Mistou, Sébastien, Zghal, Ali   +2 more
core   +1 more source

Multiscale strain localization modeling in the gurson-tvergaard-needleman plasticity model [PDF]

, 2011
The modeling of strain localization requires the use of different scales to describe the evolution of the material of the overall structure and the material inside the localized region.
D'Hers, Sebastián, Dvorkin, Eduardo
core   +2 more sources

Effect of Ductile Damage Evolution in Sheet Metal Forming: Experimental and Numerical Investigations [PDF]

, 2010
The numerical simulation based on the Finite Element Method (FEM) is widely used in academic institutes and in the industry. It is a useful tool to predict many phenomena present in the classical manufacturing forming processes such as necking, fracture,
Sébastien Mistou, Fethi Abbassi, Pantalé, Olivier, Abbassi, Fethi, Ali Zghal, Rakotomalala, Roger, Olivier Pantalé, Mistou, Sébastien, Zghal, Ali, Roger Rakotomalala   +9 more
core   +1 more source

Study of the slant fracture in solid and hollow cylinders: Experimental analysis and numerical prediction

Fracture and Structural Integrity, 2022
This paper is devoted to the numerical and experimental study of ductile fracture in bulk metal forming of the 2017A-T4 aluminum alloy. From an experimental standpoint, the ductile fracture of the 2017A-T4 aluminum alloy is investigated under ...
Nassima Ben Chabane, Nassim Aguechari, Mohand Ould Ouali   +2 more
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