Work

Hull Girder Ultimate Strength Analysis for Thin-Walled Steel Structures

Year: 2025

Type: article

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.

Source: Journal of Marine Science and Engineering

DOI: 10.3390/jmse13122282

Authors: Mateja Tomičić, Jerolim Andrić, Pero Prebeg, Smiljko Rudan

Institutions: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture in Zagreb

Language: English

Topic: Structural Integrity and Reliability Analysis

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funders: Sveučilište u Zagrebu, European Commission