Analiza čvrstoće velikih kontejnerskih brodova grednim modelom prema klasifikacijskim pravilima

Senjanović, Ivo and Vladimir, Nikola and Hadžić, Neven (2012) Analiza čvrstoće velikih kontejnerskih brodova grednim modelom prema klasifikacijskim pravilima. = Strength analysis of large container ships by using a beam model according to the classification rules. In: XX. simpozij Teorija i praksa brodogradnje, in memoriam prof. Leopold Sorta = The 20th symposium Theory and practice shipbuilding, in memoriam prof. Leopold Sorta, 27-29.09.2012., Zagreb; Croatia.

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ANALIZA ČVRSTOĆE VELIKIH KONTEJNERSKIH BRODOVA grednim modelom.pdf - Accepted Version Jezik dokumenta:English

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Official URL: http://www.hrbi.hr/sorta2012/#

Abstract (Croatian)

Osnivanje konstrukcije velikih kontejnerskih brodova, zbog njihove male krutosti na uvijanje, trebalo bi se temeljiti na hidroelastičnoj analizi. Budući da spomenuti problem nije dovoljno istražen još uvijek se koriste tzv. kvazi-statički proračuni čvrstoće. Za tu svrhu, može se koristiti gredni strukturni model ili 3D FEM model uz relativno jednostavne formule za određivanje presječnih sila prema Pravilima. U članku je opisan standardni postupak za osnivanje konstrukcije velikih kontejnerskih brodova koji se koristi danas. Zatim je primjena grednog modela, razvijenog za hidroelastičnu analizu, ilustrirana za analizu čvrstoće, kao glavnog dijela projektnog postupka. Presječne sile, odreñene prema Pravilima su korištene za određivanje valnog opterećenja po duljini grednog modela. Rezultati dobiveni programom DYANA za statičku analizu su kut uvijanja i njegov prirast, pomoću kojih se dalje mogu odrediti distribucije naprezanja i deformacije grotala važne za sigurnost kontejnera.

Abstract

The structural design of large container ships, due to their lower torsional stiffness, should be based on hydroelastic analysis. This problem is not yet completely investigated and therefore quasi static approach for strength analysis is still used. For that purpose beam structural model or 3D FEM model can be employed, with rather simple rule formulas for determining wave sectional forces. In this paper standard procedure for structural design of large container ships ordinary used nowadays is described. Then, application of an advanced beam model, developed for hydroelastic analysis, is illustrated for strength analysis as a main part of the design procedure. Sectional forces specified by classification rules are used for determining distribution of wave load along the beam model. The results obtained by the modified program DYANA for static analysis are twist angle and its variation, which may be further used for cross-section stress distributions calculation as well as for determining hatch deformations important for container safety.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Kontejnerski brod; Gredni model; Analiza čvrstoće prema pravilima
Keywords (Croatian): Container ship; Beam model; Rule based strength assessment
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 > 650 Chair of Marine Machinery and System Design
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 14 May 2015 09:08
Last Modified: 18 Oct 2017 06:25
URI: http://repozitorij.fsb.hr/id/eprint/4143

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