Acoustic signature of a submarine hull under harmonic excitation

Caresta, Mauro; Kessissoglou, Nicole

doi:10.1016/j.apacoust.2009.07.008

Cited by 137 publications

(64 citation statements)

References 34 publications

(46 reference statements)

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“…The use of one-dimensional boundary elements for predicting the sound radiation of axisymmetric bodies has received considerable attention in the literature [25][26][27]. In particular, Caresta and Kessissoglou [19] used semi-analytical boundary elements to model the acoustic field of a coupled shell and predicted the radiated noise from the shell. It should be noted that the mathematic concept of the coupled finite element/boundary element method for fluid-structure interaction problems of coupled shells is well established.…”

mentioning

confidence: 99%

“…This approach yields good results when the wavelength of vibration is much greater than the stiffener spacing, but breaks down when the two are comparable. Caresta and Kessissoglou [19] analyzed the vibro-acoustic responses of a submarine pressure hull based on the smeared method. The pressure hull was modeled as a cylindrical shell with internal bulkheads and ring stiffeners, and the cylindrical shell was closed by conical shells, which in turn were closed at each end by circular plates.…”

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confidence: 99%

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Vibro-acoustic analysis of coupled spherical–cylindrical–spherical shells stiffened by ring and stringer reinforcements

Meng

2015

Journal of Sound and Vibration

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confidence: 99%

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confidence: 99%

Vibro-acoustic analysis of coupled spherical–cylindrical–spherical shells stiffened by ring and stringer reinforcements

Meng

2015

Journal of Sound and Vibration

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“…Theoretical models are presented in the left column and compared to the experimental results in the right column. The theoretical model uses the Fluegge equations for an infinite cylindrical shell with stiffeners included in the dynamic model using 230 smeared theory [22,23]. An average stiffeners spacing of 20 mm is considered.…”

Section: Operational Dispersion Curves For the Axisymmetric Systemmentioning

confidence: 99%

Experimental investigation of the influence of internal frames on the vibroacoustic behavior of a stiffened cylindrical shell using wavenumber analysis

Meyer

Maxit

Renou³

et al. 2017

Mechanical Systems and Signal Processing

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Experimental investigation of the influence of internal frames on the vibroacoustic behavior of a stiffened cylindrical shell using wavenumber analysis. Mechanical Systems and Signal Processing, Elsevier, 2017, 93, pp.104-117. <10.1016/j.ymssp.2017 Experimental investigation of the influence of internal frames on the vibroacoustic behavior of a stiffened cylindrical shell using wavenumber analysis AbstractThe understanding of the influence of non-axisymmetric internal frames on the vibroacoustic behavior of a stiffened cylindrical shell is of high interest for the naval or aeronautic industries. Several numerical studies have shown that the non-axisymmetric internal frame can increase the radiation efficiency significantly in the case of a mechanical point force. However, less attention has been paid to the experimental verification of this statement. That is why this paper proposes to compare the radiation efficiency estimated experimentally for a stiffened cylindrical shell with and without internal frames. The experimental process is based on scanning laser vibrometer measurements of the vibrations on the surface of the shell. A transform of the vibratory field in the wavenumber domain is then performed. It allows estimating the far-field radiated pressure with the stationary phase theorem. An increase of the radiation efficiency is observed in the low frequencies. Analysis of the velocity field in the physical and wavenumber spaces allows highlighting the coupling of the circumferential orders at the origin of the increase in the radiation efficiency.

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“…(7) The soil surrounding the pile is modeled as uncoupled distributed springs and dashpots in three directions. (8) The impact force of the hydraulic hammer is modeled as distributed force acting on the circumference of pile top.…”

Section: Model Descriptionmentioning

confidence: 99%

“…The low-frequency structural and acoustic responses of a fluid-loaded cylindrical shell with structural discontinuities, corresponding to ring stiffeners and bulkheads, were investigated by Caresta and Kessissoglou [7]. The work was then extended to consider the sound radiation from a more detailed submarine structure in which the cylindrical shell is closed by truncated conical shells and circular plates [8]. Kwak et al [9] investigated the natural vibration characteristics of a hung http://dx.doi.org/10.1016/j.apacoust.2015.11.002 0003-682X/Ó 2015 Elsevier Ltd. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

Modeling of offshore pile driving noise using a semi-analytical variational formulation

et al. 2016

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a b s t r a c tUnderwater noise radiated from offshore pile driving got much attention in recent years due to its threat to the marine environment. This study develops a three-dimensional semi-analytical method, in which the pile is modeled as an elastic thin cylindrical shell, to predict vibration and underwater acoustic radiation caused by hammer impact. The cylindrical shell, subject to the Reissner-Naghdi's thin shell theory, is decomposed uniformly into shell segments whose motion is governed by a variational equation. The sound pressures in both exterior and interior fluid fields are expanded as analytical functions in frequency domain. The soil is modeled as uncoupled springs and dashpots distributed in three directions. The sound propagation characteristics are investigated based on the dispersion curves. The case study of a model subject to a non-axisymmetric force demonstrates that the radiated sound pressure has dependence on circumferential angle. The case study including an anvil shows that the presence of the anvil tends to lower the frequencies and the amplitudes of the peaks of sound pressure spectrum. A comparison to the measured data shows that the model is capable of predicting the pile driving noise quantitatively. This mechanical model can be used to predict underwater noise of piling and explore potential noise reduction measures to protect marine animals.

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Acoustic signature of a submarine hull under harmonic excitation

Cited by 137 publications

References 34 publications

Vibro-acoustic analysis of coupled spherical–cylindrical–spherical shells stiffened by ring and stringer reinforcements

Vibro-acoustic analysis of coupled spherical–cylindrical–spherical shells stiffened by ring and stringer reinforcements

Experimental investigation of the influence of internal frames on the vibroacoustic behavior of a stiffened cylindrical shell using wavenumber analysis

Modeling of offshore pile driving noise using a semi-analytical variational formulation

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