Ćatipović, Ivan and Čorić, Većeslav and Veić, Duje (2011) Calculation of floating crane natural frequencies based on linearized multibody dynamics. = Calculation of floating crane natural frequencies based on linearized multibody dynamics. In: ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2011, 19 do 24. 06. 2011., Rotterdam; Netherlands.
Full text not available from this repository.Abstract
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. Copyright © 2011 by ASME.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Keywords (Croatian): | 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; Arctic engineering; Boundary element method; Damping; Dynamic response; Linearization; Natural frequencies; Ocean engineering; Piles; Precast concrete; Seawater; Time domain analysis; Floating cranes |
| Subjects: | TECHNICAL SCIENCE |
| Divisions: | 600 Department of Naval Engineering and Marine Technology > 630 Chair of Ship Design and Offshore Technology |
| Indexed in Web of Science: | Yes |
| Indexed in Current Contents: | No |
| Citations JCR: | 0 (17.10.2017.) |
| Date Deposited: | 23 Apr 2015 11:33 |
| Last Modified: | 17 Oct 2017 13:19 |
| URI: | http://repozitorij.fsb.hr/id/eprint/3756 |
Actions (login required)
 |
View Item |
Citations:
Citations: