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Fatigue tests and fatigue-life prediction models for hybrid welded-bolted demountable shear connectors

Title
Fatigue tests and fatigue-life prediction models for hybrid welded-bolted demountable shear connectors
Type
Article in International Scientific Journal
Year
2023
Authors
He, J
(Author)
Other
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Wang, ZT
(Author)
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Vasdravellis, G
(Author)
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Wang, L
(Author)
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Xin, HH
(Author)
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Berto, F
(Author)
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Journal
Vol. 175
ISSN: 0142-1123
Publisher: Elsevier
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Publicação em ISI Web of Knowledge ISI Web of Knowledge - 0 Citations
Publicação em Scopus Scopus - 0 Citations
Other information
Authenticus ID: P-00Y-SG6
Abstract (EN): Four push out tests were conducted to assess the structural performance of a welded demountable shear connector (WDSC) under high-cycle fatigue loading. The primary failure mode observed was stud fracture at the base. The presence of grout inside the tube significantly increased the WDSC's fatigue life by 5.4 times. The study also analysed stiffness degradation and relative slip evolution during fatigue cycles. Two finite element-based approaches were employed for fatigue life prediction: the critical plane method for fatigue crack initiation life and fracture mechanics for crack propagation life. Based on the experimental and numerical results, fatigue life prediction formulas (Wo & BULL;hler curves) are proposed for WDSCs with and without grout to aid in predicting fatigue failure in fatigue-sensitive structural designs.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 18
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