On the linear stiffness of tension leg platforms

Senjanović, Ivo and Hadžić, Neven and Tomić, Marko (2011) On the linear stiffness of tension leg platforms. = On the linear stiffness of tension leg platforms. In: International Maritime Association of the Mediterranean, 13-16.09.2011., Genova, Italija.

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Abstract

The tension leg platform (TLP) is a type of compliant offshore structures generally used for deep water oil exploration. The platforms are moored by very flexible tendons so that surge amplitude can achieve a large value. The platform hull is considered as a rigid body with six DOF. The total restoring stiffness plays a very important role in the TLP dynamic behavior. In present literature inadequate formulations of the stiffness have been used. The problem is to define realistic centre of rotations. The purpose of this paper is to present a consistent formulation of the stiffness matrix, derived from the general solution established for hydroelastic analysis of ship structures, as a specific case. In reality 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.

Item Type:	Conference or Workshop Item (Lecture)
Keywords (Croatian):	tension leg platform, linear stiffness, conventional stiffness, restoring stiffness, geometric stiffness
Subjects:	TECHNICAL SCIENCE > Shipbuilding
Divisions:	600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science:	Yes
Indexed in Current Contents:	No
Citations JCR:	1 (17.10.2017.)
Citations SCOPUS:	3 (17.10.2017.)
Date Deposited:	23 May 2016 12:56
Last Modified:	17 Oct 2017 14:53
URI:	http://repozitorij.fsb.hr/id/eprint/5941

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