Naslov
Hull girder fatigue strength of corroding oil tanker

Autori
Parunov, Joško ; Žiha, Kalman ; Mage, Paulo, Jurišić, Paul

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the International workshop "Advanced ship design for pollution prevention" / Guedes Soares, C ; Parunov, Joško - London : Delhi : Taylor & Francis, 2010, 1-8

ISBN
978-0-415-58477-7

Skup
International workshop Advanced Ship Design for Pollution Prevention

Mjesto i datum
Split, Hrvatska, 23.11.2009. - 24.11.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
oil tanker; fatigue; corrosion

Sažetak
The paper describes the fatigue strength assessment of oil tanker hull girder taking into account degradation of ship hull due to the corrosion. Hull girder degradation is represented as time-varying stress increase caused by time-varying loss of midship section modulus. Nonlinear function representing hull girder section modulus loss is based on recently published corrosion measurements on large number of single-hull oil tankers. Fatigue damage accumulation is calculated for different corrosion severities by integrating timevarying instantaneous fatigue damage. Proposed method represents an improvement of the fatigue assessment procedure compared to Common Structural Rules, as the “rule” method is based on simplified assumption that corrosion wastage is constant in whole lifetime of the vessel. The paper also considers the fatigue yielding due to possible worsening of fatigue resistance due to alternating load cases and load variability in addition to the lifetime shortening due to corrosion.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

POVEZANOST RADA