Reliability based structural design of river–sea tankers: Still water loading effects

More than twenty years ago it was acknowledged that methods used in ship design, which affect safety of the vessel, are less sophisticated and modern compared to those used in some other industries, for instance aeronautics or nuclear. The most apparent response to this setback was enforced developm...

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Bibliographic Details
Published in:Marine structures Vol. 83; p. 103202
Main Authors: Motok, Milorad, Momčilović, Nikola, Rudaković, Stefan
Format: Journal Article
Language:English
Published: Barking Elsevier Ltd 01.05.2022
Elsevier BV
Subjects:
Aeronautics
Bending moments
Classification rules
Deformation
Design
Industry
Inland vessels
Mechanical properties
Methods
Naval engineering
Nuclear safety
Probability theory
Reliability
Reliability engineering
Reliability index
River-sea ships
River-sea tankers
Rivers
Safety engineering
Sea vessels
Ship design
Still-water bending moment
Structural design
Structural engineering
Structural reliability
Tanker ships
Tankers
Still-water bending moment
River-sea ships
Inland vessels
Classification rules
Reliability index
River-sea tankers
ISSN:0951-8339, 1873-4170
Online Access:Get full text
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Summary:More than twenty years ago it was acknowledged that methods used in ship design, which affect safety of the vessel, are less sophisticated and modern compared to those used in some other industries, for instance aeronautics or nuclear. The most apparent response to this setback was enforced development of reliability based methods for ship structural design. Implementation of those in the state-of-the-art rules and codes for design of ocean-going vessels is recognizable. However, much less, if anything, was done in this matter for river-sea ships, although a significant portion of their demands and capacity is stochastic in its nature. This paper is aimed to be a pilot research in this field. It uses probability approach to estimate the reliability index of Rule based formulas for still water bending moment, i.e., the probability that thus obtained values will not be overcome by actual, lege artis calculated values. It is based on analyses of more than 400 load cases of 37 prominent river-sea tankers. Acquired results are also input parameters for further analyses, which would include wave induced loads and are the subject of succeeding investigations. •Probability analysis is introduced to river – sea tankers with respect to still water bending moments.•Reliability index is estimated for non-exceedance of still water bending moment, based on statistical data for 37 prominent river-sea tankers.•Comparison is performed to the literature data based on sea – going ships.
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ISSN:0951-8339
1873-4170
DOI:10.1016/j.marstruc.2022.103202