Motion and Longitudinal Strength of a Ship in Head Sea and the Effects of Non-Linearities (4th Report)

Fukasawa, Tomonori; Yamamoto, Yoshiyuki; Fujino, Masataka; Motora, Seizo

doi:10.2534/jjasnaoe1968.1981.150_308

Cited by 9 publications

(4 citation statements)

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“…However, if we think of slamming effects, then maximum wave loads should be derived from coupled motion of waves and flexible ship. This maximum wave load must be larger than th a t of a rigid ship model (see Fukasawa et al 1981). There is another example in which ship flexibility plays im portant role.…”

Section: Discussionmentioning

confidence: 98%

“…I now give two examples of a model test using the fully elastic model. A fully elastic container ship model was first constructed by using foamed vinyl chloride (Fukasawa 1981), which has a scale ratio of 58.3 and a Young's modulus of 15 kg mm-2, so that it is possible to use a fairly thick plate. The logarithmic damping coefficient is 8 = 0.142.…”

Section: Dynamics Of Rigid Shipsmentioning

confidence: 99%

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Modelling techniques for dynamics of ships

Maeda

1991

Phil. Trans. R. Soc. Lond. A

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I discuss techniques for the modelling of the dynamics of ships in an experimental tank. Advances in computational fluid dynamics have made the numerical tank a real possibility, and I discuss the relation between the numerical and the experimental tank. Current techniques for modelling rigid ships, i.e. the seakeeping test, and flexible ships are investigated. Finally, the future prospects of these techniques are discussed.

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Section: Discussionmentioning

confidence: 98%

Section: Dynamics Of Rigid Shipsmentioning

confidence: 99%

Modelling techniques for dynamics of ships

Maeda

1991

Phil. Trans. R. Soc. Lond. A

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“…Wu et al [68] briefly reviewed the early tests on flexible ship models starting from 1954, and concluded that in order to obtain a measurable stress, rather large model scale was necessary in the case of a metal model. Fukasawa et al [69] chose foamed vinyl chloride to make the elastic model of a large bulk carrier. Later on, synthesized resin and foamed urethane, and aluminium plates attached at both sides of the ship model were employed for the elastic models of a bulk carrier and a patrol boat [70].…”

Section: Experimental Technique Of Hydroelastic Ship Modelsmentioning

confidence: 99%

Advances in the three-dimensional hydroelasticity of ships

Cui

2009

Proceedings of the Institution of Mechanical Engineers, Part M:

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The study of hydroelasticity of ships first gained momentum in the late 1970s with the work of Bishop and Price, who established the two-dimensional (2D) hydroelasticity theory of ships. The concept and basic principle presented in their work to embody the structure and the surrounding fluid as a coupled entirety was further employed and extended in the creation of the general linear three-dimensional (3D) theory of hydroelasticity for an arbitrary shaped flexible marine structure travelling with a forward speed in a seaway in the middle of 1980s (Wu, 1984; Price and Wu, 1985a;Bishop et al., 1986). Since then, great progress has been achieved in the development and application of 3D hydroelasticity theories. These include the more rigorous methods of frequency-domain linear analysis accounting for the forward speed effect and the steady flow effect, the time-domain linear 3D theory, the non-linear 3D theory and the numerical methods for a floating structure travelling in rough seas with large motions, experimental techniques of 3D flexible ship models, the hydroelasticity-based design and safety assessment, etc. This paper presents an overview of these developments and achievements of linear and non-linear 3D hydroelasticity theories of ships, and the corresponding numerical and experimental techniques.

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“…To overcome these limitations, a number of investigators have attempted to manufacture continuous models with an internal structure more similar to that of a ship, the so-called elastic models. However, manufacturing constraints did not allow for much internal detail to be included and these models consisted of an external shell with transverse bulkheads and deck openings [11,12,10,13]. As a result, the segregation of hydrodynamic and structural aspects was overcome but the shear flow was not appropriately depicted.…”

Section: Introductionmentioning

confidence: 99%