The hydrostatic stiffness of flexible floating structures for linear hydroelasticity

Huang, Linlin; Riggs, H. R.

doi:10.1016/s0951-8339(00)00007-1

Cited by 66 publications

(32 citation statements)

References 4 publications

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“…(1) in Table 1, derived for ship structures, is based on variational principle and the method of virtual displacements ). Formulation (Huang & Riggs 2000), Eq. (2) in Table 1, called complete restoring stiffness, takes pressure change into account due to variation of depth and direction caused by structure deformation as well as the geometric stiffness based on still water stress distribution.…”

Section: Integration Of Stiffness Coefficientsmentioning

confidence: 99%

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Restoring stiffness formulations and their influence on ship hydroelastic response

Senjanović¹,

Hadžić²,

Vladimir³

et al. 2013

Developments in Maritime Transportation and Exploitation of Sea Resources

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Hydroelastic analysis, with contemporary and well developed methodology, is capable of adequately capturing complex fluid-structure interaction related to ultra large container ships. A physical phenomenon of springing and whipping of modern container ships are commonly analyzed within hydroelastic methodology composed of three main parts, i.e. structural, hydrodynamic and hydrostatic mathematical model. In order to ensure valuable and reliable results, their proper definition is inevitable. This paper deals with three current restoring stiffness formulations, consistent one with distributed ship mass, consistent one with lumped masses and complete one. Consistent formulation is based on ship hydrostatics, while complete is structurally oriented with geometric stiffness included. Formulation of the restoring stiffness via the finite element method is developed as very useful approach for practical utilization of the hydroelasticity methodology. The validity of new developed approach is checked in a case of regular barge one real life container ship.

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Section: Integration Of Stiffness Coefficientsmentioning

confidence: 99%

“…Three current formulations that are considered here are consistent formulation with distributed mass, ), consistent formulation with lumped mass and complete restoring stiffness formulation, (Huang & Riggs 2000).…”

mentioning

confidence: 99%

Restoring stiffness formulations and their influence on ship hydroelastic response

Senjanović¹,

Hadžić²,

Vladimir³

et al. 2013

Developments in Maritime Transportation and Exploitation of Sea Resources

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show abstract

“…External forces are equilibrated with internal forces which depend on the tendon geometric stiffness. The stiffness can be determined by the general formulation of geometric stiffness written in the index notation (Huang & Riggs 2000;Senjanović et al 2010):…”

Section: Geometric Stiffnessmentioning

confidence: 99%

On the linear stiffness of tension leg platforms

Senjanović¹,

Hadžić²,

Tomić³

2011

Sustainable Maritime Transportation and Exploitation of Sea Resources

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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.

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“…Hydroelasticity is a known issue for many years, and there are few solutions for restoring stiffness (Price & Wu, 1985, Newman, 1994, Huang & Riggs, 2000, Malenica, 2003. In this study consistent formulation of restoring stiffness is used (Senjanović et al 2009a, b), and its condensed form is given below.…”

Section: Hydrostatic Modelmentioning

confidence: 99%

Safety of ice-strengthened shell structures of ships navigating in the Baltic Sea

2010

Advanced Ship Design for Pollution Prevention

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The hydrostatic stiffness of flexible floating structures for linear hydroelasticity

Cited by 66 publications

References 4 publications

Restoring stiffness formulations and their influence on ship hydroelastic response

Restoring stiffness formulations and their influence on ship hydroelastic response

On the linear stiffness of tension leg platforms

Safety of ice-strengthened shell structures of ships navigating in the Baltic Sea

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