Results 251 to 260 of about 14,877,607 (296)
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AIP Conference Proceedings, 2008
The paper studies the prediction of the crack growth of the brittle and ductile fracture of the structural materials. Crack extension is simulated by means of element extinction algorithms. The principal effort is concentrated on the application of the cohesive zone model with the exponential traction separation law and on the cohesive zone modelling ...
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The paper studies the prediction of the crack growth of the brittle and ductile fracture of the structural materials. Crack extension is simulated by means of element extinction algorithms. The principal effort is concentrated on the application of the cohesive zone model with the exponential traction separation law and on the cohesive zone modelling ...
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A cohesive zone model for thermomechanical fatigue
International Journal of Fatigue, 2020Abstract In this study, a temperature dependent elastic-viscoplastic cohesive zone model is developed to predict the thermomechanical fatigue (TMF) behaviour of superalloys. The theory is based on rheological models enhanced with fatigue and creep damage variables which are micro-mechanically motivated.
Jeffy Abraham +2 more
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Cohesive Zone Modeling for Adhesives
2009Adhesives are very widely used in industry. In each application field, the adhesive that is used must fulfill specific requirements. Adhesive types can be classified for instance by their (thermo-) mechanical properties, their machining or their curing conditions. This paper describes, by way of example, the characterization criteria for structural and
Matthias Nossek, Stephan Marzi
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Analytical solutions for cohesive zone models
Journal of the Mechanics and Physics of Solids, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Williams, J. G., Hadavinia, H.
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2017
According to what has been summarized in the previous chapters, simulations are performed with the Rousselier and the Gurson-Tvergaard-Needleman (GTN) models predicting the crack propagation of the C(T)-specimens with different initial crack positions, i.e., the initial crack located in the BM, in the centre of the FZ and at the interface between the ...
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According to what has been summarized in the previous chapters, simulations are performed with the Rousselier and the Gurson-Tvergaard-Needleman (GTN) models predicting the crack propagation of the C(T)-specimens with different initial crack positions, i.e., the initial crack located in the BM, in the centre of the FZ and at the interface between the ...
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Unified Cohesive Zone Model (Uczm) for Fracturing and Fragmenting Solids
Engineering Fracture Mechanics, 2023A Unified Cohesive Zone Model (UCZM), which inherits most of the advantages while overcoming the shortcomings of existing Cohesive Zone Models (CZMs), is proposed. Similar to the traditional extrinsic CZM approach, UCZM dynamically inserts the cohesive elements into the system based on local material states (e.g., stress, strain).
Zhou Lei +3 more
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Triaxiality dependent cohesive zone model
Engineering Fracture Mechanics, 2009Abstract A versatile cohesive zone model to predict ductile fracture at different states of stresses is proposed. The formulation developed for mode-I plane strain accounts for triaxiality of the stress-state explicitly by using basic elastic–plastic constitutive relations combined with two stress-state independent new model parameters.
Anuradha Banerjee, R. Manivasagam
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Modeling of Bone Failure by Cohesive Zone Models
2013Cohesive zone models are a powerful tool for investigations of non-linear deformation and failure processes. For the nanoscale, the use of cohesive zone models is particularly attractive as the ratio of interface to volume is high, and because locally acting bonds between material components can become relevant.
Thomas Siegmund +2 more
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On the Cohesive Zone Model for a Finite Crack
International Journal of Fracture, 1999The paper concentrates on the development of the crack tip model with the cohesive zone in an infinite plate with a finite crack of mode I. The estimation of the length of the cohesive zone and the crack tip opening displacement is based on the comparison of the local stress concentration according to Westergaard's theory with the cohesive stress.
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Comparison between cohesive zone models
Communications in Numerical Methods in Engineering, 2004AbstractCohesive zone models (CZMs) are widely used for numerical simulation of the fracture process. Cohesive zones are surfaces of discontinuities where displacements jump. A specific constitutive law relating the displacement jumps and proper tractions defines the cohesive zone model.
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