Hadžić, Neven and Ćorak, Maro and Parunov, Joško and Žiha, Kalman (2010) Računske neizvjesnosti modeliranja pouzdanosti brodskog trupa. = Computational uncertainties of ship hull girder reliability modelling. In: XIX. simpozij Teorija i praksa brodogradnje, in memoriam prof. Leopold Sorta = The 19th symposium Theory and practice shipbuilding, in memoriam prof. Leopold Sorta, 07-09.10.2010., Split, Lumbarda; Croatia.
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COMPUTATIONAL UNCERTAINTIES OF SHIP HULL GIRDER.pdf - Published Version Jezik dokumenta:English Download (201kB) | Preview |
Abstract (Croatian)
Cilj ovog rada je ispitati računske neizvjesnosti primjenom različitih postupaka analize pouzdanosti brodskog trupa. Za modeliranje granične čvrstoće brodskog trupa pod zajedničkim djelovanjem uzdužnih momenata savijanja na mirnoj vodi i na valovima, kako u progibu tako i u pregibu, preuzete se preporuke Međunarodne organizacije za pomorstvo (IMO) za ocjenu pouzdanosti. Primjer u članku razmatra tipičnu službu tankera za kemikalije za tek izgrađeni brod i za trup izložen hrđanju. U članku su uspoređena tri postupka analize pouzdanosti: Metoda prvog reda sa statističkim momentima drugog reda (FOSM), Napredna metoda prvog reda (AFORM) i Monte Carlo simulacija (MCS). U zaključcima se rezimiraju podaci usporedbi primijenjenih numeričkih postupaka za proračun pouzdanosti na elektroničkim računalima te se raspravljaju odgovarajući postupci za ocjenu sigurnosti brodskog trupa.
Abstract
The aim of this paper is to investigate the computational uncertainties by applying different methods in reliability analysis of ship hull girder. The International Maritime Organization (IMO) proposals for hull girder reliability assessment are undertaken for probabilistic modelling of ship ultimate strength under combined longitudinal still water and wave bending moments both for hogging and sagging conditions. The example in the paper considers a typical service profile of a chemical tanker in as-built state and in corroded hull condition. The three methods of reliability analysis are compared in the paper: the First Order Second Moment (FOSM), the Advanced First Order Reliability Method (FORM) and the Monte Carlo Simulation (MCS). The conclusions resume the results of comparison of applied methods and discuss the appropriateness of numerical reliability methods on digital computers in ship hull girder safety assessments.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Uncontrolled Keywords: | brodski trup; pouzdanost; neizvjesnost; FOSM; FORM; MCS; tanker za kemikalije |
| Keywords (Croatian): | hull girder; reliability; uncertainty; FOSM; FORM; MCS; chemical tanker |
| Subjects: | TECHNICAL SCIENCE > Shipbuilding |
| Divisions: | 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design 600 Department of Naval Engineering and Marine Technology > 640 Chair of Shipbuilding Technology |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Date Deposited: | 18 May 2015 12:59 |
| Last Modified: | 04 Oct 2017 11:46 |
| URI: | http://repozitorij.fsb.hr/id/eprint/4176 |
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