Results 201 to 210 of about 23,987,835 (236)

Cohesive Zone Model and GTN Model Collation for Ductile Crack Growth

Materials Science Forum, 2007
The micromechanical modelling encounters a problem that is different from basic assumptions of continuum mechanics. The material is not uniform on the microscale level and the material within an element has its own complex microstructure. Therefore the concept of a representative volume element (RVE) has been introduced. The general advantage, compared
Vladislav Kozák, Ivo Dlouhý, Zdeněk Chlup   +2 more
openaire   +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

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
Quan Sun, Da Qian Zan, Hong Liang Pan, Jian Jun Chen   +3 more
openaire   +1 more source

Application of a shear-modified GTN model to incremental sheet forming

AIP Conference Proceedings, 2013
This paper investigates the effects of using a shear-modified Gurson-Tvergaard-Needleman model, which is based on the mechanics of voids, for simulating material behavior in the incremental forming process. The problem chosen for analysis is a simplified version of the NUMISHEET 2014 incremental forming benchmark test.
Jacob Smith, Rajiv Malhotra, W. K. Liu, Jian Cao   +3 more
openaire   +1 more source

The Gurson-Tvergaard-Needleman (GTN) Model

2017
In the following chapter, the GTN model is applied to study the crack propagation in S355 welded joints.
openaire   +1 more source

Mechanism of increasing spinnability by multi-pass spinning forming – Analysis of damage evolution using a modified GTN model

International Journal of Mechanical Sciences, 2019
Multi-pass spinning forming is one of the major approaches to manufacture rotationally symmetric thin-walled components, which is strongly influenced by the spinnability of materials. But it remains an open question regarding the formability limit in the
He Wu, Wenchen Xu, D. Shan, B. Jin
semanticscholar   +1 more source

FEA Simulation of Clinching Process Based on GTN Damage Model

Advanced Materials Research, 2013
In this work, the Gurson-Tvergaard-Needleman (GTN) damage model is adopted to depict the material damage during the clinch joining process in a simulation-based theoretical model. The parameters of the GTN model which influence the void nucleation, growth and coalescence are identified.
Bai Jun Shi, Shu Hui Liao, Song Peng, Hang Li   +3 more
openaire   +1 more source

Meso-mechanics and damage evolution of AA5182-O aluminum alloy sheet Based on the GTN model

, 2020
According to meso-damage mechanics, the evolution of the volume of micro-voids is an important factor that contributes to damage and fracture. Improving the prediction accuracy of plastic deformation of aluminum alloy sheet is an important endeavor for ...
Gui Li, Saisai Cui
semanticscholar   +1 more source

A Double-Blind Study of SB-220453 (Tonerbasat) in the Glyceryltrinitrate (GTN) Model of Migraine

Cephalalgia, 2004
The need for experimental migraine models increases as therapeutic options widen. In the present study, we investigated SB-220453 for efficacy in the glyceryltrinitrate (GTN) human experimental migraine model. SB-220453 is a novel benzopyran compound, which in animal models inhibits neurogenic inflammation, blocks propagation of spreading depression ...
Tvedskov, Jesper Filtenborg, Iversen, H K, Olesen, J   +2 more
openaire   +3 more sources