Naslov
Stiffness of tension leg platforms

Autori
Senjanović, Ivo ; Hadžić, Neven ; Tomić, Marko ; Vladimir, Nikola

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

Izvornik
Zbornik radova IV Savjetovanja o morskoj tehnologiji in memoriam akademiku Zlatku Winkleru / Rožanić, Igor - Rijeka : Hrvatska akademija znanosti i umjetnosti (HAZU), 2012, 94-107

Skup
IV Savjetovanje o morskoj tehnologiji in memoriam akademiku Zlatku Winkleru

Mjesto i datum
Rijeka, Hrvatska, 25.11.2011. - 26.11.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
Tension leg platform; Restoring stiffness; Geometric stiffness

Sažetak
The tension leg platform (TLP) is a type of compliant offshore structures generally used for deep water oil exploration. It is moored by very flexible tendons so that surge amplitude can achieve large value. The platform hull is considered as a rigid body with six d.o.f. The total restoring stiffness plays very important role in the TLP dynamic behavior. Although there are several stiffness formulations available in the present literature, none of them is completely adequate. The issue is to define realistic centre of rotations. The consistent formulation of stiffness matrix is presented in this paper. It is derived from the general solution established for hydroelastic analysis of ship structures, as a specific case. Actually, the total TLP stiffness in dynamic analysis consists of hydrostatic hull stiffness (pressure and gravity), and conventional and geometric tendon stiffness. The new stiffness is compared to the known ones, and discrepancies are analyzed and discussed.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

POVEZANOST RADA