Second-order fatigue of intrinsic mean stress under random loadings

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ISSN: 0142-1123
DOI: 10.1016/j.ijfatigue.2019.105257
Publication date
2020-01
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Abstract
A fatigue process due to random loading that is progressively damaging a certain structural detail will vary in the presence of mean stresses. The variations are already considered in crack propagation laws and by applying equivalent 0-mean stress ranges from the Palmgren–Miner linear rule. Nevertheless, if the mean stress is intrinsic, instead of a direct consequence of the random loading, other second-order effects will have to be taken into account. Those effects are cycle quasi-ordering, histogram variations, and apparent mean tension, which are identified and defined in this study and, finally, developed in a case study for demonstrative purposes.
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Publisher Copyright: © 2019 Elsevier Ltd
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Random loading , Mean stress , Second-order , Fatigue damage , Random loading , Mean stress , Second-order , Fatigue damage , Modeling and Simulation , General Materials Science , Mechanics of Materials , Mechanical Engineering , Industrial and Manufacturing Engineering
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journal article
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Calderón-Uríszar-Aldaca , I , Biezma , M V , Matanza , A , Briz , E & Bastidas , D M 2020 , ' Second-order fatigue of intrinsic mean stress under random loadings ' , International Journal of Fatigue , vol. 130 , 105257 , pp. 105257 . https://doi.org/10.1016/j.ijfatigue.2019.105257