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Global‐local fatigue assessment of an ancient riveted metallic bridge based on submodelling of the critical detail

Liu, Z.; Correia, J.; Carvalho, H.; Mourão, A.; de Jesus, A.; Calçada, R.; Berto, Filippo
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2587528
Date
2018
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  • Institutt for maskinteknikk og produksjon [2517]
  • Publikasjoner fra CRIStin - NTNU [19737]
Original version
Fatigue & Fracture of Engineering Materials & Structures. 2018, .   10.1111/ffe.12930
Abstract
Increasing traffic demands (ie, load intensity and operational life) on ancient riveted metallic bridges and the fact that these bridges were not explicitly designed against fatigue make the fatigue performance assessment and fatigue life prediction of riveted bridges a concern. This paper proposes a global‐local fatigue analysis method that integrates beam‐to‐solid submodeling, elastoplastic of material in local region, and local fatigue life prediction approach. The proposed beam‐to‐solid submodeling can recognize accuracy local stress/strain information accompanying with the global structural effect on the fatigue response of local riveted joints. The fatigue life is predicted based on cumulative damage rule, local strains, and number of cycles with consideration of traffic data, where the relation between the fatigue life and local strain is derived according to the Basquin and Manson‐Coffin law. Besides, the elastoplastic of material is considered. The proposed methodology for fatigue life prediction based on local strain parameter and the Palmgren‐Miner linear damage hypothesis is implemented in a case study of an ancient riveted bridge.
Publisher
Wiley
Journal
Fatigue & Fracture of Engineering Materials & Structures

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