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  4. Influence of nonsymmetric steel sandwich panel joints on response and fatigue strength of passenger ship deck structures
 
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Influence of nonsymmetric steel sandwich panel joints on response and fatigue strength of passenger ship deck structures

Publikationstyp
Journal Article
Date Issued
2017-05-01
Sprache
English
Author(s)
Romanoff, Jani  
Ehlers, Sören  
Remes, Heikki  
Institut
Konstruktion und Festigkeit von Schiffen M-10  
TORE-URI
http://hdl.handle.net/11420/3536
Journal
Journal of ship production and design  
Volume
33
Issue
2
Start Page
135
End Page
143
Citation
Journal of Ship Production and Design 2 (33): 135-143 (2017)
Publisher Link
https://www.onepetro.org/journal-paper/SNAME-JSPD-2017-33-2-135
Present paper investigates the factors contributing to the stress response of steel sandwich panel deck joints when applied into the hull girder of modern passenger vessel. The emphasis is put on the fatigue analysis, which is the critical design criterion in application of these structures to ships. Two types of joints are considered, i.e., a symmetrical and a nonsymmetrical prismatic joint with respect to the geometrical midplane of the sandwich panel. Stiffness properties are derived for the joints in order to enable the modeling of sandwich structures as part of the hull girder finite element model. The influence of sandwich joints to hull girder response is studied. Notch stress analysis is used for the fatigue strength estimation. The applicability of notch stress method for steel sandwich panels is validated with experiments. The investigation shows that the fatigue strength of steel sandwich panels does not depend only on local stress concentration factors at details, but also on the global stiffness of the structural hull girder system, the sandwich panels, and thus the joint response must be taken into account.
Subjects
fatigue analysis
passenger ship
web-core sandwich structure
DDC Class
620: Ingenieurwissenschaften
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