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Matos, I.M.; Rocha, P.H.C.; Kalombo, R.B.; Veloso, L.A.C.M.; Araújo, J.A.; Castro, F.C.
International journal of fatigue, December 2020, 2020-12-00, 20201201, Letnik: 141Journal Article
•New experimental data for AA6201-T81 wires under fretting fatigue.•Nonlocal life estimation approach for wires of overhead conductors.•Effective procedure to obtain the size of the fatigue process zone.•Elastic-plastic contact model significantly improved estimated lives. Fretting fatigue tests were conducted on 6201-T81 aluminum alloy wires of an AAAC 900 MCM conductor. A finite element-based contact model combined with a nonlocal Smith–Watson–Topper criterion was used to estimate fatigue life. To account for the stress gradients beneath the contact, an average stress over a fatigue damage zone was adopted. A procedure for determining the size of the damage zone from V-notched wire test data is presented. Fatigue lives estimated using stresses from a linear elastic contact model were overly conservative, while the use of an elastic-plastic contact model significantly improved the estimates.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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