The present study aims to perform reliability analyses using Monte Carlo simulation to compute and compare the time-invariant reliability indices of stiffened panels with either conventional T-stiffeners or novel Y (Hat + Tee/Angle) stiffeners profiles in a double hull oil tanker's bottom and deck panels under axial compressive loads. The ultimate strength and the applied axial compressive stress formulations used in the limit state functions are obtained based on the International Association of Classification Societies-Common Structural Rules for oil tankers considering the following failure modes: unstiffened plate buckling, stiffener beam-column buckling, and stiffener torsional/flexural buckling (tripping). With the Y-stiffeners profile, a considerable improvement in the panels’ reliability index throughout the vessel lifetime is achieved.

Item Type:	Refereed Article
Keywords:	reliability; IACS; axial load; Monte Carlo simulation; Y-stiffener
Research Division:	Engineering
Research Group:	Maritime engineering
Research Field:	Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:	Expanding Knowledge
Objective Group:	Expanding knowledge
Objective Field:	Expanding knowledge in engineering
UTAS Author:	Elhanafi, AS (Dr Ahmed Elhanafi)
ID Code:	111779
Year Published:	2017 (online first 2016)
Web of Science® Times Cited:	3
Deposited By:	NC Maritime Engineering and Hydrodynamics
Deposited On:	2016-10-06
Last Modified:	2017-11-13
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