Parametric study on sound radiation from an infinite fluid-filled/semi-submerged cylindrical shell

Li, H.L.; Wu, Chengjun; Huang, Xiaotao

doi:10.1016/s0003-682x(02)00125-1

Cited by 26 publications

(9 citation statements)

References 11 publications

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“…The sound pressure radiating from a semi-submerged cylindrical shell filled with fluid was studied by Li and Wu. 7 The effects of the parameters such as the Mach number of the filled fluid, the thickness of the shell, and the structure damping on the far-field sound pressure were examined.…”

Section: Introductionmentioning

confidence: 99%

Far-field sound radiation of a submerged cylindrical shell at finite depth from the free surface

Miao

et al. 2014

The Journal of the Acoustical Society of America

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The far-field sound radiation behavior of a circular cylindrical shell submerged at finite depth from the free surface is studied. Based on the Flügge shell theory and the Helmholtz equation, the structure-acoustic coupling equation is established. An image method is applied so that the sound boundary condition of the free surface can be satisfied. Analytical expression of the far-field sound pressure is obtained using the stationary phase method and the Graf's addition theorem. In order to evaluate the effect of the submerged depth on sound radiation, the results of the submerged cylindrical shell at finite depth from the free surface are compared with those of the submerged cylindrical shell in the infinite fluid. The characteristics of the far-field sound pressure with the change of the depth are investigated. It is found that the submerged depth has a significant influence on the far-field sound pressure radiated from the submerged cylindrical shell due to the free surface effects. The work provides more understanding on the sound radiation properties of the submerged circular cylindrical shell without assuming infinite fluid field, which was commonly used in previous studies.

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Section: Introductionmentioning

confidence: 99%

Far-field sound radiation of a submerged cylindrical shell at finite depth from the free surface

Miao

et al. 2014

The Journal of the Acoustical Society of America

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“…e sound radiation from structures partially coupled with fluid has received growing attention. Wu et al [17,18] studied the vibroacoustic characteristics of a fluid-filled cylindrical shell semisubmerged in a coaxial flow with the Fourier transform technique, and the effects of parameters of the cylindrical shell on the vibration were discussed. Zhou and Joseph [19] employed the finite element method (FEM) with the boundary element method (BEM) to analyze the vibration and sound radiation from an underwater ribbed cylindrical shell.…”

Section: Introductionmentioning

confidence: 99%

An Analytical Solution for the Vibration and Far‐Field Sound Radiation Analysis of Finite, Semisubmerged Cylindrical Shells

Guo

Zhou

Han

2021

Shock and Vibration

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The vibration response and far-field sound radiation of a semisubmerged, finite cylindrical shell with low-frequency excitation are studied. The solution to this problem can be divided into two steps. The first step is to apply the wave propagation approach to determine the vibration response of the cylindrical shell. In the cylindrical coordinate system, the Flügge shell equations and Laplace equation are used to describe the cylindrical shell and surrounding fluid so that the vibration responses of the shell can be addressed analytically. The fluid free surface effect is taken into account by applying the sine series to force the velocity potential on the free surface to be zero. Furthermore, compared with the FEM (the finite element method), the present method is not only reliable but also effective. In the second step, the far-field sound radiation is solved by the Fourier transform technique and the stationary phase method in accordance with the vibration responses of the shell from the previous step. The boundary element method is applied to validate the reliability of the acoustical radiation calculation. The circumferential directivity of far-field sound pressure is discussed, and it is found that the maximum value of the sound pressure always appears directly under the structure when the driving frequencies are relatively low. Besides, in consideration of simplicity and less computation effort, the present method can be used for the rapid prediction of the vibration and far-field sound pressure of a semisubmerged cylindrical shell with low-frequency excitation.

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“…Hasheminejad et al (2011) achieve the visualization of shock-induced acoustic fields for a doubly fluid-loaded hollow sphere. Besides, the noise radiated from other structures such as the cylinder is also investigated by some researchers (Li et al, 2003;Liu et al, 2018;Yan et al, 2006;Zou et al, 2019). Kallivokas and Bielak (1993) provide an efficient procedure to solve the problems on exterior transient noise radiation and scattering involving an infinite elastic circular shell submerged in an unbounded acoustic fluid medium.…”

Section: Introductionmentioning

confidence: 99%

Investigation on impact noise radiated by the elastic collision of multiple spheres

Xiao

Yang

2020

Journal of Vibration and Control

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Collision among multiple structures is a major source of noise in industry. To gain a more comprehensive understanding of the collision noise radiated by the impact structures, the collision noise of multiple spheres is measured by an impact device and simulated by a validated numerical model. The numerical model of collision noise radiation is constructed with the explicit nonlinear LS-DYNA3D and the acoustic module in LMS virtual lab. Based on this numerical model, the influence of different factors, including the initial velocity of the impactor, the initial gap, and the number of impactees, on the collision noise radiation of multiple spheres is studied. The numerical results reveal that the amplitude of acoustic pressure is proportional to the initial velocity of the impactor in an elastic collision. It is also found that the initial gap between impactees does affect noise radiation through the acceleration and the noise superposition of spheres. With the increasing number of impactees, the attenuation of noise will slow down.

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Parametric study on sound radiation from an infinite fluid-filled/semi-submerged cylindrical shell

Cited by 26 publications

References 11 publications

Far-field sound radiation of a submerged cylindrical shell at finite depth from the free surface

Far-field sound radiation of a submerged cylindrical shell at finite depth from the free surface

An Analytical Solution for the Vibration and Far‐Field Sound Radiation Analysis of Finite, Semisubmerged Cylindrical Shells

Investigation on impact noise radiated by the elastic collision of multiple spheres

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