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Evaluating a strain energy fatigue method using cyclic plasticity models

For the development of constitutive equations that describe the behaviour of materials under cyclic plastic strains, different kinds of formulations can be adopted. Recently, an energy-based fatigue damage parameter has been developed to present energy-fatigue life curves using a calculation of the...

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Main Authors: Shahrooi, S., Metselaar, I.H., Huda, Z.
Format: Article
Published: 2010
Subjects:
Q Science (General)
Online Access:http://eprints.um.edu.my/12612/
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spelling my.um.eprints.126122020-02-12T04:07:53Z http://eprints.um.edu.my/12612/ Evaluating a strain energy fatigue method using cyclic plasticity models Shahrooi, S. Metselaar, I.H. Huda, Z. Q Science (General) For the development of constitutive equations that describe the behaviour of materials under cyclic plastic strains, different kinds of formulations can be adopted. Recently, an energy-based fatigue damage parameter has been developed to present energy-fatigue life curves using a calculation of the total strain energy. In this study, the damage criterion is examined by calculation of the plastic strain energy from stress-strain hysteresis loops in the cyclic plasticity models under condition of multi-axial fatigue. These cyclic plasticity models are the Garud multi-surface model and the Chaboche nonlinear kinematic hardening model. The models are briefly explained and the general features of their computational procedure are presented. Then, the hysteresis loops of these models will be obtained and the fatigue lives are predicted and compared to experimental data by the ratio of predicted life to experimental life. Consequently, a weighting factor on shear plastic work is presented to decrease the life factors. 2010 Article PeerReviewed Shahrooi, S. and Metselaar, I.H. and Huda, Z. (2010) Evaluating a strain energy fatigue method using cyclic plasticity models. Fatigue & Fracture of Engineering Materials & Structures, 33 (8). pp. 530-537. ISSN 8756-758X
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Shahrooi, S.
Metselaar, I.H.
Huda, Z.
Evaluating a strain energy fatigue method using cyclic plasticity models
description For the development of constitutive equations that describe the behaviour of materials under cyclic plastic strains, different kinds of formulations can be adopted. Recently, an energy-based fatigue damage parameter has been developed to present energy-fatigue life curves using a calculation of the total strain energy. In this study, the damage criterion is examined by calculation of the plastic strain energy from stress-strain hysteresis loops in the cyclic plasticity models under condition of multi-axial fatigue. These cyclic plasticity models are the Garud multi-surface model and the Chaboche nonlinear kinematic hardening model. The models are briefly explained and the general features of their computational procedure are presented. Then, the hysteresis loops of these models will be obtained and the fatigue lives are predicted and compared to experimental data by the ratio of predicted life to experimental life. Consequently, a weighting factor on shear plastic work is presented to decrease the life factors.
format Article
author Shahrooi, S.
Metselaar, I.H.
Huda, Z.
author_facet Shahrooi, S.
Metselaar, I.H.
Huda, Z.
author_sort Shahrooi, S.
title Evaluating a strain energy fatigue method using cyclic plasticity models
title_short Evaluating a strain energy fatigue method using cyclic plasticity models
title_full Evaluating a strain energy fatigue method using cyclic plasticity models
title_fullStr Evaluating a strain energy fatigue method using cyclic plasticity models
title_full_unstemmed Evaluating a strain energy fatigue method using cyclic plasticity models
title_sort evaluating a strain energy fatigue method using cyclic plasticity models
publishDate 2010
url http://eprints.um.edu.my/12612/
_version_ 1662755138918416384
score 13.211869

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