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Cell Model Predictions of Ductile Fracture in Damaged Pipelines
2003This study explores further extension of the computational cell methodology to model Mode I crack extension in a high strength pipeline steel. Plane-strain analyses of a tubular structure containing longitudinal cracks with varying crack depth to thickness ratios (a/t) are employed to characterize crack-tip constraint for cracked pipes under internal ...
C Ruggieri, E Hippert
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Damage due to fracture of brittle reinforcements in a ductile matrix
Acta Metallurgica et Materialia, 1992Abstract A micromechanical model is developed for brittle particle reinforced metal matrix composites sustaining damage. A composite with uniformly distributed damage is modelled by a three-phase damage cell consisting of a cracked particle in a cylindrical matrix cell embedded in an undamaged composite cylinder.
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Modeling of Ductile Damage and Fracture Behavior Based on Different Micromechanisms
International Journal of Damage Mechanics, 2010The article deals with the effect of stress triaxiality on the inelastic deformation behavior of aluminum alloys. The proposed continuum model takes into account stress triaxiality dependence of the yield condition as well as of the damage criterion and the fracture condition with different branches corresponding to various damage and failure modes ...
Michael Brünig +2 more
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Damage Evolution, Instability and Fracture in Ductile Solids
1990Selected issues arising in the continuum mechanics analysis of instability and fracture in ductile metals are discussed. Three topics are considered: (i) the role of material rate dependence in setting the character of governing equations, (ii) deformation and failure in porous plastic solids and (iii) the direct calculation of fracture toughness from ...
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Volume 4: Materials Technology, 2017
The local approach to modelling ductile tearing is a useful technique to give insight into fracture mechanics. However, applications of the local approach have been stymied by the high cost of finding the parameters that characterize it because of the number of specimens and expensive post-processing that the testing requires.
Coppejans, O.J., Walters, C.L.
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The local approach to modelling ductile tearing is a useful technique to give insight into fracture mechanics. However, applications of the local approach have been stymied by the high cost of finding the parameters that characterize it because of the number of specimens and expensive post-processing that the testing requires.
Coppejans, O.J., Walters, C.L.
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Critical Damage and Ductile Fracture: Quantitative Experimental Determination
1987Summary Original metallographic observations are used to determine quantitatively the porosity and porosity gradients near fracture surfaces. The techniques combining Ion Beam Polishing, Scanning Electron Microscopy, manual drawings on tracing-paper and quantitative metallography lead to valid porosity measurements.
F.H. MOUSSY, P. LEFEBURE
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Analysis of ductile damage and fracture under reverse loading
International Journal of Mechanical Sciences, 2022Zhichao Wei +3 more
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Variational crack phase-field model for ductile fracture with elastic and plastic damage variables
Computer Methods in Applied Mechanics and Engineering, 2022Jike Han +2 more
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