Results 71 to 80 of about 121 (98)
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Numerical determination of plastic
AbstractIn previous works, a da/dN versus plastic crack tip opening displacement model was proposed to study fatigue crack growth. The plastic crack tip opening displacement, δp, which quantifies the crack tip plastic deformation, is determined numerically using the finite element method.
F.V. Antunes +3 more
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J and CTOD Estimation Procedure for Circumferentially Cracked Pipes Based on Fully-Plastic Solutions
2010 8th International Pipeline Conference, Volume 2, 2010This work provides an estimation procedure to determine the J-integral and CTOD for pipes with circumferential surface cracks subjected to bending load for a wide range of crack geometries and material (hardening) based upon fully-plastic solutions. A summary of the methodology upon which J and CTOD are derived sets the necessary framework to determine
Mario S. G. Chiodo, Claudio Ruggieri
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Acta Mechanica, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hoh, H. J., Xiao, Z. M., Luo, J.
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hoh, H. J., Xiao, Z. M., Luo, J.
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Engineering Fracture Mechanics, 2000
A method is proposed for accurately estimating the Crack Tip Opening Displacement (CTOD) at physical cracking initiation in ductile materials. The method requires a few precracked specimens to be loaded in such a way as to exhibit various crack extensions.
T Pardoen, F Delannay
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A method is proposed for accurately estimating the Crack Tip Opening Displacement (CTOD) at physical cracking initiation in ductile materials. The method requires a few precracked specimens to be loaded in such a way as to exhibit various crack extensions.
T Pardoen, F Delannay
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Influence of the mesh size on plastic CTOD
2021The Crack Tip Opening Displacement (CTOD) is an elastic-plastic fracture mechanics parameter usually employed as a measurement of fracture toughness and to explain the fatigue crack growth. This parameter can be decomposed on two different components: the elastic and plastic one.
Sanchez-Mancera, J. +3 more
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Elastic-plastic fracture toughness of PC/ABS blend based on CTOD and J-integral methods
Polymer, 1996Abstract The elastic-plastic fracture toughness of a PC/ABS blend has been investigated simultaneously by the conventional J-integral and the crack tip opening displacement (CTOD) methods for specimen thickness varying from 4 to 15 mm. The critical J (Jc) and the critical CTOD (δc) are based on crack initiation.
Ming-Luen Lu +2 more
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A Comparison of J and CTOD as Elastic-Plastic Fracture Characterizing Parameters
1995This paper presents results of experimental and numerical analysis studies to investigate the relationship between J and CTOD and assess whether they are, indeed, both suitable elastic-plastic fracture characterizing parameters. Detailed elastic-plastic finite element analyses were undertaken for SE(B) specimens with a/W ratios of 0.1, 0.2, 0.3 and 0.5.
JR Gordon, BK Neale, Y-Y Wang
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Volume 7: Structures and Dynamics, Parts A and B, 2012
Very often in the open literature the crack propagation simulation is based on the linear elastic fracture mechanics. This article describes a novel application of the cyclic crack tip opening displacement (ΔCTOD) method for evaluation of the cyclic nonlinear energy release rate under large plasticity and cyclic loading conditions. In order to consider
Piotr Bednarz +2 more
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Very often in the open literature the crack propagation simulation is based on the linear elastic fracture mechanics. This article describes a novel application of the cyclic crack tip opening displacement (ΔCTOD) method for evaluation of the cyclic nonlinear energy release rate under large plasticity and cyclic loading conditions. In order to consider
Piotr Bednarz +2 more
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Ocean Engineering, 2014
The extreme loading conditions, i.e. the large plastic bending combined with high internal pressure, and the potential cracks or flaws in the welds pose tremendous challenges to the structural integrity for offshore pipelines. In this paper, the fracture response of offshore pipeline with semi-elliptical surface crack under large plastic deformation is
Y.M. Zhang +3 more
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The extreme loading conditions, i.e. the large plastic bending combined with high internal pressure, and the potential cracks or flaws in the welds pose tremendous challenges to the structural integrity for offshore pipelines. In this paper, the fracture response of offshore pipeline with semi-elliptical surface crack under large plastic deformation is
Y.M. Zhang +3 more
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Journal of Pressure Vessel Technology, 2020
Abstract Engineering solutions for crack-tip opening displacement (CTOD) and J-integral estimations for pipelines with a surface crack are proposed based on parametric finite element (FE) analyses for various geometries, material properties, and internal pressure conditions.
Youn-Young Jang +4 more
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Abstract Engineering solutions for crack-tip opening displacement (CTOD) and J-integral estimations for pipelines with a surface crack are proposed based on parametric finite element (FE) analyses for various geometries, material properties, and internal pressure conditions.
Youn-Young Jang +4 more
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