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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Imprimir: 2152-5102
ISSN En Línea: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v28.i6.50
12 pages

Symmetric Oscillations of a Porous-Elastic Strip with Free Surfaces for the Case of Closed Pores

N. S. Gorodetska
Institute of Hydromechanics of National Academy of Sciences of Ukraine, 8/4, Zhelyabov St., Kyiv, 03057, Ukraine

SINOPSIS

Dispersion characteristics of the natural modes of a porous-elastic strip with free surfaces for the case of closed pores are studied in the context of the Biot theory. Due to the existence of the three types of waves in a porous fluid-saturated medium, the dispersion spectrum, even obtained without consideration of the dissipative effects, is considerably more complicated than the spectrum of a perfectly elastic strip. This spectrum is distinguished by existence of infinitely many pure imaginary roots at a specified frequency. In addition, there are two real branches passing through the coordinate origin in a porous-elastic strip with closed pores.


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