A plain linear rule for fatigue analysis under natural loading considering the sequence effect

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URI: http://hdl.handle.net/11556/405
ISSN: 0142-1123
ESSN: 1879-3452
DOI: 10.1016/j.ijfatigue.2017.06.018
Publication date
2017
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ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
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Abstract
Fatigue under variable amplitude loading is currently assessed with the Palmgren-Miner rule in structural standards, ignoring the order of loading, which would require non-linear or mixed rules, especially for the random loading sequences applied to certain structures. Therefore, the goal is to develop a practical and simple correction factor ensuring the linear summation of damage is conservative, so as to take the sequence effect into account in random loading from natural sources. The theoretical consistency of this approach is demonstrated and a case study is developed to test the feasibility of the new rule and its simplicity.
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Keywords
Cumulative damage, Variable amplitude fatigue, Damage accumulation, Sequence effect, Random loading
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journal article
Citation
I. Calderon-Uriszar-Aldaca, M.V. Biezma, A plain linear rule for fatigue analysis under natural loading considering the sequence effect’, International Journal of Fatigue, Available online 16 June 2017, ISSN 0142-1123, https://doi.org/10.1016/j.ijfatigue.2017.06.018.