Analitički i numerički proračun dodatne mase kod analize vibracije broda

Bašić, Josip and Parunov, Joško (2013) Analitički i numerički proračun dodatne mase kod analize vibracije broda. = Analytical and Numerical Computation of Added Mass in Ship Vibration Analysis. Brodogradnja : časopis brodogradnje i brodograđevne industrije, 64 (2). pp. 1-11. ISSN 0007-215X. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q3 (2013). Točan broj autora: 2.

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Abstract

Comparison between analytical and numerical determination of the added hydrodynamic mass in ship vibration analysis is performed. Analytical analysis was done on a semi-submerged cylinder of a circular cross section. Numerical calculations were carried out by the boundary element method (BEM) implemented in NX Nastran finite element (FE) software. Fairly good agreement was found between the two methods for added mass calculation. Also, analysis of the real ship vibrations is performed. Free vertical vibrations of a 9200TEU containership are analyzed where the hull was modelled by the beam finite elements (FE), while the shell plating was modelled by the plate FE without stiffness to define boundary elements of the wetted surface. Such calculated results are compared with the ones obtained by software DYANA which uses Timoshenko's beam FE and in which the added mass is determined by traditional analytically-based method. Comparative analysis shows some moderate differences in the calculation of added mass between the two approaches, indicating the need for further research on this topic.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): added mass, boundary element method, finite element method, ship vibrations
Subjects: TECHNICAL SCIENCE > Shipbuilding
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: 0 (05.10.2017.)
Quartiles: Q3 (2013)
Citations SCOPUS: 3 (05.10.2017.)
Date Deposited: 03 Dec 2014 11:45
Last Modified: 05 Oct 2017 12:27
URI: http://repozitorij.fsb.hr/id/eprint/3097

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