Vjerojatnosni model smanjenja granične čvrstoće oštećenog nasukanog broda

Bužančić Primorac, Branka and Parunov, Joško and Žiha, Kalman (2014) Vjerojatnosni model smanjenja granične čvrstoće oštećenog nasukanog broda. = Probabilistic model of ultimate strength reduction of grounded ship. In: XXI. simpozij Teorija i praksa brodogradnje, in memoriam prof. Leopold Sorta = The 21st symposium Theory and practice shipbuilding, in memoriam prof. Leopold Sorta, 02-04.10.2014., Baška; Croatia.

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Abstract (Croatian)

Cilj ovoga rada je razviti vjerojatnosni model smanjenja graničnog momenta savijanja nasukanog tankera. Pristup se zasniva na Monte Carlo (MC) simulaciji, koristeći raspodjelu vjerojatnosti prema Međunarodnoj pomorskoj organizaciji (IMO). Smanjenje granične čvrstoće računa se regresijskom jednadžbom, koristeći se pojmom pokazatelja oštećenja kod nasukavanja (grounding damage index, GDI). U ovom je slučaju analiziran aframax tanker, za kojeg je histogramu dobivenom MC simulacijom prilagođena Weibull-ova razdioba. Rezultati ovog proračuna mogu biti korisni u procjeni pouzdanosti strukture oštećenog brodskog trupa, kao i za pojmovna (konceptualna) istraživanja različitih struktura.

Abstract

The aim of this paper is to develop probabilistic model of the reduction of the bending moment capacity of oil tanker following grounding accident. The approach is based on Monte Carlo (MC) simulation using probability distributions of damage parameters proposed by International Maritime Organization (IMO). Reduction of ultimate strength is calculated by recently developed regression equations using concept of grounding damage index (GDI). Case study is presented for aframax tanker resulting in the Weibull distribution fitted to the histogram obtained by MC simulation. Results of the study are useful for structural reliability assessment of damaged ships and also for conceptual studies of different structural configurations as demonstrated in the paper.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: oštećeni tanker; granična čvrstoća; regresijska jednadžba
Keywords (Croatian): damaged tanker; ultimate strength; regression equation
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: 15 May 2015 11:31
Last Modified: 05 Oct 2017 12:54
URI: http://repozitorij.fsb.hr/id/eprint/4164

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