Three-dimensional Lump-Mass formulation of a catenary riser with bending, torsion and irregular seabed interaction effect

Chai, Young-Suk; Varyani, K.S.; Barltrop, Nigel

doi:10.1016/s0029-8018(01)00087-7

Cited by 79 publications

(20 citation statements)

References 6 publications

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“…By now, several models of seabed mechanics have been proposed [6,[9][10][11] . In this paper, we proposed a new kind of seabed model, which can account for rebound, friction, impact in three dimensions.…”

Section: Seabed Modelmentioning

confidence: 99%

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A study on dynamic response of cable-seabed interaction

Wang

Huang

Deng

et al. 2009

J. Shanghai Jiaotong Univ. (Sci.)

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A numerical method is developed to investigate the dynamic response of cable-seabed interaction in this paper. The motion of cable is described by the Lumped Parameter Method, while the seabed, unlike the prevailing simplified model of elastic foundation, is modeled as an irregular continuous rigid surface with rebound and friction existing, and the forces exerted by the seabed consist of normal counterforce and isotropic tangential Coulomb friction resistance. To describe the detailed dynamic response, two coefficients are introduced by analogy with the theory of rigid body collision with friction. The cable-seabed kinematic and dynamic contact conditions are formulated subsequently, and are used to incorporate the seabed effect into the cable dynamics to produce a set of ordinary differential governing equations. In this paper, we employ 4th order Runge-Kutta method to solve these equations. Several simulation cases are presented to illustrate the seabed effect. The results show that friction and impact have a prominent influence on the statics and dynamics of the cable.

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Section: Seabed Modelmentioning

confidence: 99%

“…In the literature, there are considerable amount of papers proposing various methods for the dynamic and static analysis of towed cable since the 1960's [1][2][3][4][5][6][7][8] . The behavior of towed cable under a variety of conditions has been fully examined, such as low-tension cable.…”

Section: Introductionmentioning

confidence: 99%

A study on dynamic response of cable-seabed interaction

Wang

Huang

Deng

et al. 2009

J. Shanghai Jiaotong Univ. (Sci.)

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“…In the lumped mass model, mooring line is spatial discretized into lumped mass nodes which are connected by massless springs. Discretization in this way simplifies the problem and provides numerical efficiency, which has been performed in many other studies (Chai et al, 2002;Huang, 1994;Leonard and Nath, 1981;Low and Langley, 2006;Orcina, 2009). Furthermore, each item in the lumped mass model has a clear physical meaning, which facilitates the inclusion of the soil-chain interactions.…”

Section: Introductionmentioning

confidence: 97%

“…However, most of these studies focus on the suspended component in the water such as the method adopted in commercial codes Riflex, Cable3D and Orcaflex (Fylling et al, 2008;Ma and Webster, 1994;Orcina, 2009) . In these studies, anchors are assumed to be a fixed point located at the surface of the seabed (Kim et al, 2013(Kim et al, , 2005Tahar and Kim, 2003) and the seabed is modelled as a rigid plane or an elastic spring (Chai et al, 2002;Ma and Webster, 1994). This process has ignored the chainsoil interactions, which may not be safe for a semi-taut or taut mooring system as stated above.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of a taut mooring line accounting for the embedded anchor chains

2016

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“…Chai et al [5] proposed a three-dimensional lump-mass formulation for riser structure analysis which is capable of handling irregular seabed interaction. They adopted a simplified model by replacing the seabed surface with an elastic foundation with independent elastic springs having an arbitrary thickness which maybe critically damped.…”

Section: Introductionmentioning

confidence: 99%

Non-linear finite element analysis of flexible risers in presence of buoyancy force and seabed interaction boundary condition

Kordkheili

Bahai

2007

Arch Appl Mech

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A non-linear finite element static analysis for flexible risers with large displacements is presented using a four-node pipe elbow element with 24 degrees of freedom. A pipe-soil interaction model is used to identify seabed boundary condition. The effects of buoyancy force as well as steady-state current loading are considered in the finite element solution for riser structures response. In fact considering buoyancy force among with current loading and seabed interaction boundary condition in this paper leads to a particular formulation. The resulting formulation has been implemented in a finite element code which is subsequently used to model and analyze some typical riser configurations. The results of some sample solutions are given to illustrate the accuracy and capability of the formulation.

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Three-dimensional Lump-Mass formulation of a catenary riser with bending, torsion and irregular seabed interaction effect

Cited by 79 publications

References 6 publications

A study on dynamic response of cable-seabed interaction

A study on dynamic response of cable-seabed interaction

Dynamics of a taut mooring line accounting for the embedded anchor chains

Non-linear finite element analysis of flexible risers in presence of buoyancy force and seabed interaction boundary condition

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