External loads for multihull watercraft

• Autorzy: Trębacki K. , Królicka A.
• Konferencja: Symposium Vibrations In Physical Systems (23 ; 28-31.05.2008 ; Będlewo koło Poznania ; Polska)
• Języki publikacji: EN

Abstrakty

EN

For multihull watercraft, general differential equations of motion were formulated taking into account possible movements of the oceanotechnic construction. These movements are connected with freedom degrees of the construction floating on the undulated sea surface. General formulas given for possible construction movements describe the external loads connected with hydrodynamic reactions, damping forces and hydrostatic reactions. The generalised excitation forces can refer to the case of regular undulation and for this case general formulas are given. Irregular sea undulation, which is a stochastic process, requires using linear filters developed based on parametric wave excitations relating to one of spectra collected in Table 1.

Słowa kluczowe

EN

multihull; hydrodynamic forces

PL

łódź wielokadłubowa; siły hydrodynamiczne

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2008
• Tom: Vol. 23
• Strony: 371--376
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Trębacki K.

• Gdansk University of Technology, Faculty of Ocean Engineering and Ship Technology, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Królicka A.

• Gdansk University of Technology, Faculty of Ocean Engineering and Ship Technology, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland

Bibliografia

• [1] Chakrabarti S.K., Offshore Engineering, Offshore Structure Analysis, Inc., Plainfield, Illinois, USA, Vol.1, 2005.
• [2] Druet Cz., Sea dynamics, Gdansk University Publishing House, Gdańsk 2000 (in Polish).
• [3] Kang D., Hasegawa K., Prediction method of hydrodynamic forces acting on the hull of a blunt-body ship in the even keel condition, Journal of Marine Science and Technology, Vol.12, Number 1, 1-14, 2007.
• [4] Królicka A., Stochastic approach to the dynamics of a linear floating object, Marine Technology Transactions-Vol.17, pp.121-130, Gdańsk 2006.
• [5] Rumianowski A., Investigating the dynamics of selected marine floating objects, Gdańsk 2003 (in Polish).
• [6] Rumianowski A., Dynamics of free weight-displacement rigid offshore float constructions, Shipbuilding XXXIX, Gdańsk 1984 (in Polish).
• [7] Sobczyk K., Stochastic differential equations, Warszawa 1996 (in Polish).
• [8] Sobczyk K, Spencer Jr.,B.F., Stochastic models of material fatigue, Wydawnictwa Naukowo-Techniczne, Warsaw 1996 (in Polish).