Some aspects of geometric stiffness modelling in the hydroelastic analysis of ship structures

Senjanović, Ivo and Vladimir, Nikola and Hadžić, Neven (2010) Some aspects of geometric stiffness modelling in the hydroelastic analysis of ship structures. = Some aspects of geometric stiffness modelling in the hydroelastic analysis of ship structures. Transactions of FAMENA, 34 (4). pp. 1-10. ISSN 1333-1124. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q4 (2010). Točan broj autora: 3.

[img]
Preview
Text
Some aspects of geometric stiffness modelling in the hydroelastic analysis of ship structures.pdf - Accepted Version Jezik dokumenta:English

Download (424kB) | Preview
Official URL: https://www.fsb.unizg.hr/tulcs/public/reports/some...

Abstract

Hydroelastic analysis of ship structures is a complex task of determining the interaction between the structure motion and vibrations on the one hand and water on the other. In the governing equation of motion, the unified restoring and geometric stiffness play an important role. The hydroelastic problem is solved by the mode superposition method based on the finite element technique. Simplified modal geometric stiffness is derived by neglecting the rotational degree of freedom in the shell finite elements. The influence of such a simplification on accuracy is analysed in the case of beam flexural vibrations, where distributed mass is also modelled by a set of lumped masses. Based on good results obtained by both the direct calculation and some commercial software packages, the same approach is used for beam buckling analysis. The performed analysis shows that the use of a simplified geometric stiffness matrix yields quite good results and its application in the hydroelastic analysis of ship structures is acceptable.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): Beam model; Buckling; FEM; Natural vibrations; Structural analysis
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: Yes
Indexed in Current Contents: No
Citations JCR: 3 (17.10.2017.)
Quartiles: Q4 (2010)
Citations SCOPUS: 4 (17.10.2017.)
Date Deposited: 16 Apr 2015 07:30
Last Modified: 17 Oct 2017 14:13
URI: http://repozitorij.fsb.hr/id/eprint/3616

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year