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Application of a New Cohesive Zone Model in Low Cycle Fatigue

Cao, Xuan and Vormwald, Michael (2013):
Application of a New Cohesive Zone Model in Low Cycle Fatigue.
In: Solids and Structures, pp. 31-40, 2, (3), [Article]

Abstract

A cohesive zone model (CZM) for material fatigue analysis is presented. This cyclic CZM contains a damage variable and a corresponding damage evolution law. Considering the influence of the constraint condition for CZM, the triaxiality factor is also involved in this model. The new cyclic CZM can describe the different damage evolution mechanisms in the fatigue crack initiation and fatigue crack growth process. A unique set of model parameters is used. The material damage parameters included in the damage evolution law can be obtained from the material strain-life curve. Then they are used for fatigue crack growth calculation. The simulation results are compared with the experimental data in the very low cycle fatigue regime

Item Type: Article
Erschienen: 2013
Creators: Cao, Xuan and Vormwald, Michael
Title: Application of a New Cohesive Zone Model in Low Cycle Fatigue
Language: English
Abstract:

A cohesive zone model (CZM) for material fatigue analysis is presented. This cyclic CZM contains a damage variable and a corresponding damage evolution law. Considering the influence of the constraint condition for CZM, the triaxiality factor is also involved in this model. The new cyclic CZM can describe the different damage evolution mechanisms in the fatigue crack initiation and fatigue crack growth process. A unique set of model parameters is used. The material damage parameters included in the damage evolution law can be obtained from the material strain-life curve. Then they are used for fatigue crack growth calculation. The simulation results are compared with the experimental data in the very low cycle fatigue regime

Journal or Publication Title: Solids and Structures
Volume: 2
Number: 3
Uncontrolled Keywords: Cohesive Zone Model; Damage Evolution; Triaxiality Dependence; Low Cycle Fatigue
Divisions: 13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics > Fachgebiet Werkstoffmechanik
13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics
13 Department of Civil and Environmental Engineering Sciences
Date Deposited: 27 Jan 2015 15:03
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