Fatigue assessment of marine structures

Garbatov, Yordan Y. and Rudan, Smiljko and Gaspar, Bruno and Guedes Soares, Carlos (2011) Fatigue assessment of marine structures. = Fatigue assessment of marine structures. In: 1st International Conference of Maritime Technology and Engineering, MARTECH 2011, 10-12.05.2011., Lisbon; Portugal.

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Official URL: https://www.researchgate.net/profile/Carlos_Guedes...

Abstract

This paper reviews recently developed models for fatigue damage of marine structures accounting for several structural imperfections and different types of loadings. The studied imperfections are generally present in the stress response characteristics and fatigue damage model applied. Besides commonly present uncertainties in fatigue ship structural analysis associated with structural modeling and the random wave induced loading there are also uncertainties arising from imperfection of structural joint that may occur during manufacturing and service life and the interaction between wave induced load and structure. The paper discuses the influence of the imperfections over the hot spot stress distribution and not with the reasons for their appearance. The long-term stress range acting on the elements is defined within a stochastic analysis as a function of wave induced pressure stresses that are combined with the stresses resulting from the vertical wave induced bending moment of the ship hull. Structural analysis is performed by the finite element method utilizing sub-model techniques. This work also deals with the fatigue assessment of marine structures, describing several steps of the calculation accounting for the combination of low- and high-frequency induced loading. Fatigue damage is calculated based on the Palgrem-Miner approach. © 2011 Taylor & Francis Group, London.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): Developed model; Fatigue assessments; Fatigue damage models; High frequency HF; Long-term stress; Pressure stress; Random waves; Ship hull; Stochastic analysis; Stress response; Structural imperfections; Structural joints; Structural modeling; Wave-induced loads; Fatigue damage; Finite element method; Hulls (ship); Marine engineering; Ocean structures; Stress concentration; Structural analysis; Uncertainty analysis; Loading
Subjects: TECHNICAL SCIENCE
Divisions: 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science: Yes
Indexed in Current Contents: No
Citations JCR: 1 (16.10.2017.)
Citations SCOPUS: 3 (16.10.2017.)
Date Deposited: 24 Apr 2015 08:37
Last Modified: 16 Oct 2017 14:38
URI: http://repozitorij.fsb.hr/id/eprint/3740

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