Time domain springing analysis on a floating barge under oblique wave

Kim, Yooil; Kim, Kyong‐Hwan; Kim, Yonghwan

doi:10.1007/s00773-009-0068-z

Cited by 14 publications

(11 citation statements)

References 7 publications

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“…The motions of the body surface and slamming sections are calculated by motions of the two adjacent node and the shape function. The details follow the works of Kim et al (2009aKim et al ( , 2009bKim et al ( , 2009c.…”

Section: Beam Theory Approximationmentioning

confidence: 97%

“…One is to indirectly validate numerical models by a comparison with each other because the beam theory model, WISH-FLEX BEAM, were validated against the experiment for the flexible barge in Ecole Centrale de Marseille (Kim et al, 2009a(Kim et al, , 2009b(Kim et al, , 2009c. In addition, the fluid part, WISH, were validated against the experiment of S175 (Kim and Kim, 2008).…”

Section: M Bargementioning

confidence: 99%

“…(55) should be solved by an iterative sequence because the force term from the fluid domain is a function of velocity and displacement at the next time step. The fixed point iteration method conjunction with Aitken acceleration scheme is successfully applied to this problem (Kim et al, 2009a;Iron and Tuck, 1969). The acceleration scheme is necessary because when incompressible fluid is coupled with a moving structure, the impulsiveness of added mass induces slow convergence.…”

Section: Implicit Time Integration Of Body Motionmentioning

confidence: 99%

“…(53) and (54) into Eq. (55), the final form of the equation of motion is expressed as (Kim et al, 2009a(Kim et al, , 2009b 1…”

Section: Implicit Time Integration Of Body Motionmentioning

confidence: 99%

“…The details were introduced by the works of Kim et al (2009aKim et al ( , 2009bKim et al ( , 2009c. It should be noted that the beam and the fluid panel modes are coupled based on nodal motions in the Cartesian coordinate system.…”

Section: Beam Theory Approximationmentioning

confidence: 99%

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Numerical analysis on springing and whipping using fully-coupled FSI models

Kim

2014

Ocean Engineering

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a b s t r a c tThis paper focuses on ship springing and whipping analysis using a three-dimensional (3-D) Rankine panel method combined with a beam-element-based 1-D structural model and a shell-element-based 3-D structural model. In addition, slamming loads are considered by 2-D generalized Wagner model (GWM). The beam model is a classical idealization of a ship structure, which is based on Timoshenko beam theory for bending and Vlasov beam theory for non-uniform torsion. The 3-D model consists of beam and shell elements, and its motions are approximated by a few of lower modes. Different coupling schemes are applied to couple the 3-D panel method and the different structure models. Whereas the 1-D beam model is coupled in a Cartesian coordinate system, the 3-D finite element (FE) model is coupled in a generalized coordinate system. The difference in coordinate systems leads to different numerical implementations of coupling. Agreement and discrepancy between the coupled models are discussed regarding results for a 60 m barge, a 6500 TEU containership, and an experimental model of a virtual 10,000 TEU containership. The bulkheads in the barge and the 6500 TEU containership are properly considered in beam modeling according to relative stiffness between the bulkheads and hulls. In linear responses to waves, good agreement is obtained between all the models. However, differences between the models are found in nonlinear springing and whipping responses.

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Section: Beam Theory Approximationmentioning

confidence: 97%

Section: M Bargementioning

confidence: 99%

Section: Implicit Time Integration Of Body Motionmentioning

confidence: 99%

“…(53) and (54) into Eq. (55), the final form of the equation of motion is expressed as (Kim et al, 2009a(Kim et al, , 2009b 1…”

Section: Implicit Time Integration Of Body Motionmentioning

confidence: 99%

Section: Beam Theory Approximationmentioning

confidence: 99%

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Numerical analysis on springing and whipping using fully-coupled FSI models

Kim

2014

Ocean Engineering

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Numerical investigation into combined global and local hydroelastic response in a large container ship based on two-way coupled CFD and FEA

Takami

Iijima

2019

J Mar Sci Technol

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In this study, for efficient safety assessment of a ship's hull girder subjected to a combination of the global vertical bending moment (VBM) and the local double-bottom bending moment (DBM), a numerical method based on a coupled computational fluid dynamics (CFD) and finite-element analysis (FEA) is first developed. The mutual two-way coupled CFD and FEA in which the elastic deformation of the ship is taken over to the CFD solutions is employed. The present two-way coupled method is developed in two steps, in a weakly coupled manner and a strongly coupled manner. The developed two-way coupled methods are validated via a comparative study against the available experimental results and the straightforward one-way coupled CFD and FEA in terms of the rigid body motion, VBM, and local water pressure. Using the present strongly coupled method, the added mass with regards to the elastic deformation of the ship is reflected in the results of a decrease in the frequency of 2-node vibration mode of the ship or the vibratory (hydroelastic) component in the water pressure. Then, the DBM is evaluated using the estimated water pressure on the ship bottom. An investigation is finally made into the effect of the hydroelastic component in the DBM on the total DBM and the hull girder ultimate strength.

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Time-domain hydroelastic analysis with efficient load estimation for random waves

Kang

Kim

2017

International Journal of Naval Architecture and Ocean Engineeri

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Time domain springing analysis on a floating barge under oblique wave

Cited by 14 publications

References 7 publications

Numerical analysis on springing and whipping using fully-coupled FSI models

Numerical analysis on springing and whipping using fully-coupled FSI models

Numerical investigation into combined global and local hydroelastic response in a large container ship based on two-way coupled CFD and FEA

Time-domain hydroelastic analysis with efficient load estimation for random waves

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