Acoustic high-frequency scattering by elastic cylindrical shells

Dickey, J.; Nixon, D. A.; D’Archangelo, J. M.

doi:10.1121/1.389724

Cited by 9 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, S" is a meromorphic function that can be alternatively expressed as e _ "2iS" _ <-.<*)/£" £| J _ C(r){£k___i£|L (21) where all the parameters appearing here have been defined above. Comparing Eqs (11)-(13), it follows that i"=ie n W e sm? "…”

Section: Re (Inmentioning

confidence: 99%

See 1 more Smart Citation

Acoustic Resonance Scattering by Submerged Elastic Shells

Gaunaurd

Werby²

1990

Applied Mechanics Reviews

View full text Add to dashboard Cite

We review a number of instances in which classical acoustic wave scattering from submerged elastic shells can be analyzed in the resonance region of their spectra. We recently reviewed (Refs 42,43,12) the cases dealing with acoustic resonance scattering from solid elastic bodies, or with elastic resonance scattering from fluid or solid inclusions in elastic media. It only remains for us to address the works dealing with submerged shells, which we analyze here. We study scattering by bare or viscoelastically coated spherical and cylindrical shells in water, by means of (exact) normal-mode solutions, and by spheroidal shells by numerical approaches, particularly via the T-matrix method. We consider the shell responses mostly in unbounded media and when the interrogating waves are plane and c.w., although some recent findings valid for pulsed incidences and in the vicinity of environmental boundaries are also included. We use the methodology of the resonance scattering theory (RST) as much as possible, emphasizing its post-1981 results. High-frequency findings, obtained by asymptotic methods, are extrapolated to lower frequencies, to confirm RST predictions for the intermediate spectral regions in which the most important structural resonances are known to reside. A large number of bibliographical entries are collected and discussed in connection with our approach.Downloaded From: http://appliedmechanicsreviews.asmedigitalcollection.asme.org/ on 05/24/2015 Terms of Use: http://asme.org/terms Gaunaurd and Werby: Acoustic resonance scattering

show abstract

Section: Re (Inmentioning

confidence: 99%

“…Approximate, high-frequency methods for scattering from cylindrical/spherical shells have also been used over the years. Two of these important approaches are those associated with the names of Kirchhoff [13] and Watson-Sommerfeld [21,39,94,100]. The most important nonspherical/noncylindrical shell shape under study is the spheroidal [24,71].…”

mentioning

confidence: 99%

Acoustic Resonance Scattering by Submerged Elastic Shells

Gaunaurd

Werby²

1990

Applied Mechanics Reviews

View full text Add to dashboard Cite

show abstract

“…However, two additional real roots correspond to the shift from one Riemann sheet to another and do not seem to have any physical meaning. 13,14 Dickey et al 15 have investigated the transition in the scattering characteristics for a fluid-filled submerged cylindrical aluminum shell as a function of shell thickness. The cylindrical shell has been modeled by the theory of elasticity.…”

Section: Introductionmentioning

confidence: 99%

Influence of the curvature on the dispersion curves of a submerged cylindrical shell

Metsaveer

Klauson

1996

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

The free vibration of a thin-walled fluid-loaded cylindrical shell is discussed. The TimoshenkoMindlin-type theory of thin plates and shells that includes the effects of shear deformation and rotatory inertia is used to describe the motion of the structure. A classical approach of the Watson transformation applied to the normal mode solution makes it possible to solve the problem in a series of different circumferential waves. The coordinates of the poles in a complex wave number plane provide the phase velocities and attenuation of different wave field components, and the study of the corresponding dispersion curves helps to classify the circumferential waves. However, it is not always straightforward to associate propagation types in a fluid-loaded shell with those of a ''dry'' shell, since additional roots appear. In the case of a fluid-loaded aluminum shell, the phase velocity curve that asymptotically approaches the Rayleigh wave velocity for the elastic half-space at high frequencies, is attributed to the A 0 Lamb-type wave in a submerged shell. This wave is considerably influenced by the curvature of the structure surface at low frequencies where strong interaction with the Franz waves takes place. As a result of this interaction, the A 0 wave characteristics become very close to those of the Franz family waves. The position of the A 0 wave dispersion curve between the Franz curves depends on the radius of curvature of the shell.

show abstract

“…Рассмотрим эквивалентный (по толщине и материалу) плоский слой. В нем могут распространяться симметричные (5) и антисимметричные (А) нормальные (типа Лэмба) волны. Полное число симметричных Qs и антисимметричных Qa волн, возможных в плоском слое заданной толщины (2 d=a-b) на частоте to, равно [ lB ] т/г (2…”

unclassified

Стационарное Рассеяние Акустической Волны Толстостенным Круговым Упругим Цилиндром

Veksler¹

1986

Proceedings of the Academy of Sciences of the Estonian SSR. Phy

View full text Add to dashboard Cite

Acoustic high-frequency scattering by elastic cylindrical shells

Cited by 9 publications

References 0 publications

Acoustic Resonance Scattering by Submerged Elastic Shells

Acoustic Resonance Scattering by Submerged Elastic Shells

Influence of the curvature on the dispersion curves of a submerged cylindrical shell

Стационарное Рассеяние Акустической Волны Толстостенным Круговым Упругим Цилиндром

Contact Info

Product

Resources

About