Experimental Investigation of Wave-Induced Ship Hydroelastic Vibrations by Large-Scale Model Measurement in Coastal Waves

Jia, Jiao; Ren, Huilong; Sun, Shuzheng; Adenya, Christiaan Adika

doi:10.1155/2016/9296783

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…The mesh for the deck is generated as shown in Figure 5. 0 in (14) is determined by the relative position of the deck and the incident wave profile at time . Then [ GW ] is computed on the wet deck mesh based on (15).…”

Section: Nonlinear [mentioning

confidence: 99%

See 1 more Smart Citation

On the Nonlinear Vibrational Responses of a Large Vessel with a Broad Bow Flare under Wave Excitation: Theory and Experiment

2018

Shock and Vibration

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A fully coupled nonlinear three-dimensional (3D) hydroelastic method is developed to investigate vibrational responses of a large ship with a pronounced bow flare subjected to high seas. This numerical model consists of a 3D boundary element method, 1D Euler-Bernoulli beam model, and a 2D generalized Wagner model. Green water loads were considered. Experimental study was carried out in a towing tank on a self-propelled segmented model with nonuniform steel backbones. The ship model was tested in regular incident waves of large amplitude. Impact pressure and nonlinear vertical bending moments were measured and compared with numerical predictions. The proposed nonlinear model produced similar results to the experimental model. Furthermore, the effects of elastic modes and nonlinearities on the numerical results were analyzed.

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Section: Nonlinear [mentioning

confidence: 99%

“…The instantaneous wetted surface was approximately obtained by intersecting the original hydrodynamic mesh with the still water surface. Jialong et al [14] conducted a large-scale model test in real coastal sea conditions. The bow flare slamming and the subsequent whipping phenomena were captured and analyzed.…”

Section: Introductionmentioning

confidence: 99%

On the Nonlinear Vibrational Responses of a Large Vessel with a Broad Bow Flare under Wave Excitation: Theory and Experiment

2018

Shock and Vibration

Self Cite

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“…The probability that the response exceeds a specified value n Y , can be obtained by formula (14), is that:…”

Section: Short-term Extreme Distribution With Statistical Modelmentioning

confidence: 99%

“…However, in the authors' previous researches the ships were designed as rigid hulls, which could not reflect the elastic effects of ship girders. Furthermore, according to the authors' best knowledge, so far, there has been very little published literature related to the wave loads experiments performed using a large-scale segmented model in coastal sea [14][15].…”

Section: Introductionmentioning

confidence: 99%

Predictions of Wave Induced Ship Motions and Loads by Large-Scale Model Measurement at Sea and Numerical Analysis

Jiao¹,

Sun²,

Ren³

2016

brod

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SummaryIn order to accurately predict wave induced motions and load responses of ships, a new experimental methodology is proposed. The new method includes conducting tests with largescale models under natural environment conditions. The testing technique for large-scale model measurements proposed is quite applicable and general to a wide range of standard hydrodynamic experiments in naval architecture. For the needs of this study, a large-scale segmented self-propelled model was designed for investigating seakeeping performance and wave load behavior and for testing the systems, and relevant experiments were performed. A two-hour voyage trial of the large-scale model in order to perform a series of simulation exercises was carried out at Huludao harbor in October 2014. During the voyage, onboard systems, operated by the crew, were used to measure and record the sea waves and the model responses. The post-voyage analysis of the measurements, both of the sea waves and the model's responses, was made to predict the ship's motion and load responses of short-term at the corresponding sea state. Furthermore, the numerical analysis of the short-term prediction was made using an in-house code and the result was compared with the experiment data. The long-term extreme prediction of motions and loads was also carried out based on the numerical results of the short-term prediction.

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“…The theory of ship hydroelasticity has seen a process from potential flow to viscous flow, from The experiment methods considered as an irreplaceable way to study the physics of hydroelasticity and to validate different numerical models. Jiao [1] made a detailed review on the experimental study of ship hydroelasticity. The segmented ship model experiment has become the main method to study the ship hydroelasticity [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Non-Linear Ship Hydroelasticity by CFD-FEM Coupling Method

Sun

Liu

Zou

et al. 2021

JMSE

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With the increase of ship size, the stiffness of the hull structure becomes smaller. This means that the frequency of wave excitation tends to be closer to the natural frequency of the hull vibration, which in turn makes the hydroelastic responses more significant. An accurate assessment of the wave loads and motion responses of hulls is the key to ship design and safety assessment. In this paper, the coupled CFD (Computational Fluid Dynamics)-FEM (Finite Element Method) method is used to investigate the non-linear hydroelasticity effect of a 6750-TEU (Twenty-foot Equivalent Unit) container ship. First, by comparing the heave, pitch, and vertical bending moment at midship section (VBM4) against experimental results reported in the literature, the validity of the numerical method in this paper is illustrated. Secondly, the ship responses under different wave length–ship length ratio, wave frequency-structure natural frequency, wave steepness, and ship speeds are studied. It is found that the wave length–ship length ratio has a more important influence on the hydroelastic response than that from wave frequency-structure natural frequency ratio, and the effect of wave non-linearity will behave differently under different wave length–ship length ratio. The increase of rigid body motion caused by forward speed will not correspondingly increase the non-linearity of the hydroelastic response.

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Experimental Investigation of Wave-Induced Ship Hydroelastic Vibrations by Large-Scale Model Measurement in Coastal Waves

Cited by 7 publications

References 14 publications

On the Nonlinear Vibrational Responses of a Large Vessel with a Broad Bow Flare under Wave Excitation: Theory and Experiment

On the Nonlinear Vibrational Responses of a Large Vessel with a Broad Bow Flare under Wave Excitation: Theory and Experiment

Predictions of Wave Induced Ship Motions and Loads by Large-Scale Model Measurement at Sea and Numerical Analysis

Investigation of Non-Linear Ship Hydroelasticity by CFD-FEM Coupling Method

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