Pregled bibliografske jedinice broj: 577072
Calculation of floating crane natural frequencies based on linearized multibody dynamics
Calculation of floating crane natural frequencies based on linearized multibody dynamics // Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Rotterdam : Boston (MA) : Taipei: American Society of Mechanical Engineers (ASME), 2011. str. 229-237 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
Calculation of floating crane natural frequencies based on linearized multibody dynamics
Autori
Ćatipović, Ivan ; Čorić, Većeslav ; Veić, Duje
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
/ - Rotterdam : Boston (MA) : Taipei : American Society of Mechanical Engineers (ASME), 2011, 229-237
ISBN
978-079184438-0
Skup
ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2011
Mjesto i datum
Rotterdam, Nizozemska, 19.06.2011. - 24.06.2011
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Added mass; Bending stiffness; Coupled dynamic response; Critical damping; Frequency domains; Governing equations; Multi-body dynamic; Multi-body system dynamics; Numerical example; Partially immersed; Potential theory; Rigid body; Six degrees of freedom; Small displacement; Suspended loads; Time domain
Sažetak
Natural frequencies and modes of a floating crane with a suspended load are studied. Both the floating crane and the suspended load are modeled as rigid bodies with six degrees of freedom. The suspended load is considered to be partially immersed in the sea water. A wire rope for load suspension is assumed to be non-extensible and without bending stiffness. Linearized governing equations for a coupled dynamic response are derived based on the multibody system dynamics with small displacements assumption. An added mass for the floating crane as well as the partially immersed load is determined using traditional potential theory and treedimensional boundary element method (in a frequency domain). Mapping from the frequency to the time domain is necessary to determine the correct added mass value for calculating above described natural frequencies and modes. A damping of the overall system can be calculated as some small portion of a critical damping. A numerical example is based on the floating crane during positioning of precast concrete piles. These piles are main part of foundations for over sea bridges.
Izvorni jezik
Engleski
Znanstvena područja
Brodogradnja
POVEZANOST RADA
Ustanove:
Fakultet strojarstva i brodogradnje, Zagreb
