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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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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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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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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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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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Combining interface damage and friction in a cohesive‐zone model
International Journal for Numerical Methods in Engineering, 2006AbstractA new method to combine interface damage and friction in a cohesive‐zone model is proposed. Starting from the mesomechanical assumption, typically made in a damage‐mechanics approach, whereby a representative elementary area of the interface can be additively decomposed into an undamaged and a fully damaged part, the main idea consists of ...
ALFANO G., E. SACCO
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Cohesive zone modeling of thin aluminium sheets
Materials Today: Proceedings, 2020Abstract Single edge notch (SEN) aluminium specimens of widths (D): 20, 40 and 50 mm are tested under uniaxial tensile loading for a strain rate of 0.005/min. The notch depth to width ratio (a/D = 0.25) and the gauge length to width ratio (L/D = 2.5) are constant for these tested specimens.
O.S. Vishnu, Mahendra Gattu
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An examination of stability in cohesive zone modeling
Computer Methods in Applied Mechanics and Engineering, 2010zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Numerical aspects of cohesive-zone models
Engineering Fracture Mechanics, 2003Abstract The importance of the cohesive-zone approach to analyse localisation and failure in engineering materials is emphasised and various ways to incorporate the cohesive-zone methodology in computational methods are discussed. Numerical representations of cohesive-zone models suffer from a certain mesh bias.
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