Results 11 to 20 of about 180 (136)

Application of a material model based on the Johnson-Cook and Gurson-Tvergaard-Needleman model in ship collision and grounding simulations

Ocean Engineering, 2020
Abstract Nonlinear numerical simulation has become an important tool for analysing dynamic responses and energy dissipation of structures during ship collision and grounding scenarios. However, determining a globally acknowledged failure criterion remains a challenging task.
Wang Z, Hu Z, Liu K, Chen G
openaire   +4 more sources

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   +3 more sources

Fatigue crack growth modeling considering a hybrid propagation strategy

Fatigue &Fracture of Engineering Materials &Structures, Volume 46, Issue 4, Page 1613-1626, April 2023., 2023
Abstract Fatigue results from the occurrence of several damage mechanisms and their interactions. The cyclic plastic strain and damage accumulation at the crack tip are widely pointed as the main agents behind fatigue crack growth (FCG). In this work, the authors propose the prediction of FCG through a node release numerical model that offers several ...
Edmundo R. Sérgio, Fernando V. Antunes, Diogo M. Neto   +2 more
wiley   +1 more source

Edge tracing technique to study post‐necking behavior and failure in Al alloys and anisotropic plasticity in line pipe steels

Fatigue &Fracture of Engineering Materials &Structures, Volume 45, Issue 9, Page 2427-2442, September 2022., 2022
Abstract The recently developed edge tracing (ET) method allows to estimate the radial deformation in axisymmetric tensile specimens via analysis of digital images recorded during the experiments. Images are processed to detect the sample's contours and therefore estimate the minimal cross‐section diameter.
Zacharie Shokeir, Jacques Besson, Chiraz Belhadj, Tom Petit, Yazid Madi   +4 more
wiley   +1 more source

Mechanical Properties Evaluation and Crack Propagation Behavior in Dissimilar Metal Welded Joints of 304 L Austenitic Stainless Steel and SA508 Low‐Alloy Steel

Science and Technology of Nuclear Installations, Volume 2022, Issue 1, 2022., 2022
The material mechanical properties and crack propagation behavior of dissimilar metal welded joint (DMWJ) of pressurized water reactor (PWR) was investigated. In this research, the mechanical parameters of the cladding layer materials (304L‐SA508) of the DMWJ in PWRs were obtained by the continuous indentation test.
Yuman Sun, He Xue, Fuqiang Yang, Shuai Wang, Shun Zhang, Jinxuan He, Rehmat Bashir, Raffaella Testoni   +7 more
wiley   +1 more source

The Effect of Compression on the Void Coalescence under Strong Dynamic Loading

Advances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022
The void coalescence under strong dynamic loading is a significant spallation process for ductile metals. Since the spallation is basically dominated by tension waves, most void coalescence studies have focused on the tension effect. However, it is known that in spallation, the material initially undergoes a strong compression wave, and then an ...
Ruichen Tu, Ning Wei, Yongmao Pei, Yan Liu, Fengguo Zhang, Dongsheng Zhang, Daniela Pilone   +6 more
wiley   +1 more source

Application of Gurson-Tvergaard-Needleman constitutive model to the tensile behavior of reinforcing bars with corrosion pits. [PDF]

PLoS ONE, 2013
Based on meso-damage mechanics and finite element analysis, the aim of this paper is to describe the feasibility of the Gurson-Tvergaard-Needleman (GTN) constitutive model in describing the tensile behavior of corroded reinforcing bars.
Yidong Xu, Chunxiang Qian
doaj   +1 more source

Multiaxial static strength of a 3D printed metallic lattice structure exhibiting brittle behavior

Fatigue &Fracture of Engineering Materials &Structures, Volume 44, Issue 12, Page 3499-3516, December 2021., 2021
Abstract This paper focuses on numerical the prediction of multiaxial static strength of lattice structures. We analyze a body‐centered cubic cell printed with Selective Laser Melting in AlSi10Mg aluminum alloy. Parent material is experimentally characterized, and the Gurson‐Tveergard‐Needleman (GTN) damage model is calibrated to predict failure in ...
Matteo Gavazzoni, Marco Pisati, Stefano Beretta, Stefano Foletti   +3 more
wiley   +1 more source

Gradient‐enhanced damage growth modeling of ductile fracture

International Journal for Numerical Methods in Engineering, Volume 122, Issue 20, Page 5676-5691, 30 October 2021., 2021
Abstract We present a gradient‐enhanced damage model for ductile fracture modeling, describing the degraded material response coupled to temperature. Continuum thermodynamics is used to represent components of the energy dissipation as induced by the effective material response, thermal effects, and damage evolution.
Ragnar Larsson, Ahmet S. Ertürk
wiley   +1 more source

Machine learning for material characterization with an application for predicting mechanical properties

GAMM-Mitteilungen, Volume 44, Issue 1, March 2021., 2021
Abstract Currently, the growth of material data from experiments and simulations is expanding beyond processable amounts. This makes the development of new data‐driven methods for the discovery of patterns among multiple lengthscales and time‐scales and structure‐property relationships essential.
Anke Stoll, Peter Benner
wiley   +1 more source