Naslov
Transfer functions of nonlinear motion for ship advancing in head seas

Autori
Prpić-Oršić, Jasna ; Dejhalla, Roko ; Zamarin, Albert

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of MARINE TECHNOLOGY III (ODRA 99) / Graczyk, T. ; Jastrzebski, T. ; Brebbia, C.A. - : Szczecin, 1999, 153-162

Skup
Third International Conference on Marine Technology ODRA 99

Mjesto i datum
Szczecin, Poljska, 11.10.1999. - 13.10.1999

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
nonlinear-motion; seakeeping; transfer functions

Sažetak
The non-linear effects of large motion, caused by added mass, damping coefficients, exciting force and restoring force change with time, cannot be neglected. When an incoming wave approaches the body, an instantaneous draft is computed, and the draft respective coefficients are interpolated using linear regression method. The equations of non-linear motion of ship in head waves are formulated in the paper. The wave is described by linear theory. To solve the coupled time-dependent equations of motion, the trigonometric series method is developed. The comparison of results with experimental values and with the values obtained by fourth-order Runge-Kutta method confirms the numerical results. Compared with Runge-Kutta method the developed technique is faster, shows better stability and the obtained results are functions of time. Transfer functions and absolute and relative motions obtained by non-linear calculation model are compared with the values obtained by linear calculation model.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

POVEZANOST RADA