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Fatigue life prediction by integrating EVICD fatigue damage model and an advanced cyclic plasticity theory

Jiang, Yanyao and Ott, Walter and Baumann, Christian and Vormwald, Michael and Nowack, Horst (2008):
Fatigue life prediction by integrating EVICD fatigue damage model and an advanced cyclic plasticity theory.
In: International Journal of Plasticity, Elsevier Ltd, pp. 780-801, 25, ISSN doi:10.1016/j.ijplas.2008.06.007, [Article]

Abstract

An event independent cumulative damage (EVICD) fatigue prediction model was previously developed for the fatigue damage prediction under general multiaxial stress state and loading conditions. The model takes the plastic strain energy as the major contributor to the fatigue damage. The application of the EVICD model does not require a cycle counting method for general random loading. In the current effort, derivations were made to explicitly and directly relate the material constants in the fatigue model to the parameters in the Manson–Coffin equations and the cyclic stress–strain curve of the material. In addition, an advanced cyclic plasticity theory was implemented for the determination of the detailed stress–strain response that was required as the input for the EVICD fatigue model. Three metallic materials were used to demonstrate the capability of the modified fatigue model for the predictions of fatigue lives under different loading conditions. The results show that the fatigue model can provide fatigue life predictions in close agreement with the experimental observations.

Item Type: Article
Erschienen: 2008
Creators: Jiang, Yanyao and Ott, Walter and Baumann, Christian and Vormwald, Michael and Nowack, Horst
Title: Fatigue life prediction by integrating EVICD fatigue damage model and an advanced cyclic plasticity theory
Language: English
Abstract:

An event independent cumulative damage (EVICD) fatigue prediction model was previously developed for the fatigue damage prediction under general multiaxial stress state and loading conditions. The model takes the plastic strain energy as the major contributor to the fatigue damage. The application of the EVICD model does not require a cycle counting method for general random loading. In the current effort, derivations were made to explicitly and directly relate the material constants in the fatigue model to the parameters in the Manson–Coffin equations and the cyclic stress–strain curve of the material. In addition, an advanced cyclic plasticity theory was implemented for the determination of the detailed stress–strain response that was required as the input for the EVICD fatigue model. Three metallic materials were used to demonstrate the capability of the modified fatigue model for the predictions of fatigue lives under different loading conditions. The results show that the fatigue model can provide fatigue life predictions in close agreement with the experimental observations.

Journal or Publication Title: International Journal of Plasticity
Volume: 25
Publisher: Elsevier Ltd
Uncontrolled Keywords: Cyclic plasticity Fatigue prediction Multiaxial 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: 02 Feb 2015 08:35
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