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Volume 13
Issue 12
10.3390/jmse13122282
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Article

Hull Girder Ultimate Strength Analysis for Thin-Walled Steel Structures

by
Mateja Tomičić
,
Jerolim Andrić
*,
Pero Prebeg
and
Smiljko Rudan
Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2025, 13(12), 2282; https://doi.org/10.3390/jmse13122282 (registering DOI)
Submission received: 30 October 2025 / Revised: 20 November 2025 / Accepted: 26 November 2025 / Published: 29 November 2025
(This article belongs to the Special Issue Design and Analysis of Ship Structure)
Versions Notes

Abstract

The ultimate strength of the hull girder represents one of the key criteria in the design of large thin-walled steel structures such as ships and aircrafts. For large ship structures, the hull girder’s ultimate strength is expressed as the maximum internal vertical bending moment that the hull structure can absorb before collapse. In this paper, a progressive collapse analysis of the hull girder has been performed for several different variants of large steel thin-walled box girders, taken from the literature as benchmark cases, using the nonlinear finite element method (NLFEM), considering both material and geometrical nonlinearity. Results from the performed calculations were compared to the numerical results of other researchers published in the literature, as well as the results of our physical experiment. The influence of initial geometrical imperfection on the value of the ultimate bending moment achieved with NLFEM has been investigated.
Keywords: ultimate strength, hull girder, vertical bending moment, nonlinear finite element method ultimate strength, hull girder, vertical bending moment, nonlinear finite element method

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MDPI and ACS Style

Tomičić, M.; Andrić, J.; Prebeg, P.; Rudan, S. Hull Girder Ultimate Strength Analysis for Thin-Walled Steel Structures. J. Mar. Sci. Eng. 2025, 13, 2282. https://doi.org/10.3390/jmse13122282

AMA Style

Tomičić M, Andrić J, Prebeg P, Rudan S. Hull Girder Ultimate Strength Analysis for Thin-Walled Steel Structures. Journal of Marine Science and Engineering. 2025; 13(12):2282. https://doi.org/10.3390/jmse13122282

Chicago/Turabian Style

Tomičić, Mateja, Jerolim Andrić, Pero Prebeg, and Smiljko Rudan. 2025. "Hull Girder Ultimate Strength Analysis for Thin-Walled Steel Structures" Journal of Marine Science and Engineering 13, no. 12: 2282. https://doi.org/10.3390/jmse13122282

APA Style

Tomičić, M., Andrić, J., Prebeg, P., & Rudan, S. (2025). Hull Girder Ultimate Strength Analysis for Thin-Walled Steel Structures. Journal of Marine Science and Engineering, 13(12), 2282. https://doi.org/10.3390/jmse13122282

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