Strukturna optimizacija broda za prijevoz ukapljenog prirodnog plina

Žanić, Vedran and Andrić, Jerolim and Hadžić, Neven (2012) Strukturna optimizacija broda za prijevoz ukapljenog prirodnog plina. = Structural optimization of LNG carrier. 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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Abstract (Croatian)

Cilj rada je prikazati glavne rezultate strukturne optimizacije broda za prijevoz ukapljenog plina koja je provedena u okviru EU FP6 istraživačkog projekta IMPROVE. Izgrađen je grubi model konačnih elemenata koji obuhvaća tri teretna prostora korištenjem programskog paketa MAESTRO. Proračun čvrstoće proveden je prema Pravilima Bureau Veritas (BV). Cilj cjelokupnog optimizacijskog postupka bio je optimalna redistribucija materijala s ciljem smanjenja težine/cijene i poboljšanja sigurnosti. Provedena je studija senzitivnosti s ciljem istraživanja utjecaja razmaka okvirnih rebara, razmaka uzdužnjaka i tipa materijala na definirane projektne ciljeve. Strukturna optimizacija, na razini jednog skladišta, rezultirala je u smanjenju mase oko 424 t (10.8%), cijena je smanjenja za oko 5%, sigurnost je povećana, dok je VCG je blago smanjen za oko 20cm, u usporedbi s prototipnom konstrukcijom.

Abstract

The purpose of the paper is to present main results of LNG carrier structural optimization. The work has been carried through EU FP6 project IMPROVE. Coarse mesh FE model has been developed in extent of the three cargo holds using MAESTRO software. The strength calculation has been carried out according Bureau Veritas (BV) Rules. The objective of the whole optimization process was to distribute the material more effectively in order to reduce weight/cost and to improve the structural safety. Sensitivity analysis has been performed in order to investigate the influence of a web frame spacing, longitudinal stiffener spacing and material type on the defined design objectives. Structural optimization of LNG structure, for one cargo hold, resulted in mass decrease of about 424 t, or 10.8%, cost of the structure was decreased for about 5%, structural safety was increased and VCG was slightly decreased for about 20 cm compared to prototype structure.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: strukturna optimizacija; brod za prijevoz ukapljenog prirodnog plina; MKE
Keywords (Croatian): Ship structural optimization; LNG carrier; FEM
Subjects: TECHNICAL SCIENCE > Shipbuilding
Divisions: 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 14 May 2015 08:24
Last Modified: 18 Oct 2017 06:27
URI: http://repozitorij.fsb.hr/id/eprint/4138

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