Senjanović, Ivo and Vladimir, Nikola and Tomić, Marko and Hadžić, Neven and Šoda-Cotić, Stipan (2016) An integral procedure for ship vibration analysis. = An integral procedure for ship vibration analysis. In: 22. Simpozij "Teorija i praksa brodogradnje" in memoriam prof. Leopold Sorta (SORTA 2016), 06-08.10.2016., Trogir, Seget Donji.
Full text not available from this repository.Abstract (Croatian)
Postupak je ilustriran na primjeru broda za prijevoz kemikalija od 49500 dwt. Proračun vibracija uključuje određivanje uzbudnih sila vijka i odziv broda na uzbudu vijka i motora. Vibracije brodskog trupa analizirane su pomoću 1D modela MKE, a vibracije brodske konstrukcije pomoću kombiniranog 3D i 1D modela krmenog dijela broda odnosno preostalog dijela trupa. Analiza je provedena za brod u balastu i potpuno natovareni brod te za nepoduprti i poduprti motor. Dobiveni rezultati pokazuju da je razina vibracija pobuđenih motorom visoka te je preporučena ugradnja kompenzatora vibracija. Mjerenje vibracija izvršio je Brodarski Institut – Zagreb za vrijeme pokusne plovidbe. Postignuto je dobro slaganje izračunatih i izmjerenih prirodnih frekvencija brodskog trupa.
Abstract
The procedure is illustrated in the case of a 49500 dwt Chemicals and Oil Products Carrier. Vibration calculation includes estimation of propeller excitation forces and ship response due to both propeller and engine excitation. Ship hull vibrations are analysed by 1D FEM model, while ship structure vibrations by a combined 3D and 1D FEM model of the aftbody and remaining hull part, respectively. Ballast condition and full ship are considered in combination with unsupported and supported engine. The obtained results show that the engine excited vibrations are rather high, and therefore installation of vibration compensator is recommended. Ship vibrations are measured by Brodarski Institute – Zagreb during the sea trial. Very good agreement between calculated and measured ship hull natural frequencies is achieved.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Uncontrolled Keywords: | uzbuda vijka i motora, vibracije trupa i podstruktura, MKE analiza |
| Keywords (Croatian): | propeller and engine excitation; ship hull and substructure vibrations; FEM |
| 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: | 17 Mar 2017 14:03 |
| Last Modified: | 16 Feb 2018 14:10 |
| URI: | http://repozitorij.fsb.hr/id/eprint/7582 |
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