Waves in a Viscous Solid with Cavities

Багдоев, А. Г.; Erofeyev, Vladimir I.; Shekoyan, Ashot V.

doi:10.1007/978-3-642-37267-4_1

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2016

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“…Three-dimensional model of porous material was proposed in [7]. From wave theory, it is well known that in case of quadratic nonlinearity an effective exchange of energy is possible between a set of three waves.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear interaction of elastic waves in solid porous material under the condition of phase-group synchronism

Ерофеев¹,

Dar’enkov²,

Plekhov³

et al. 2016

J. vibroeng.

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Nonlinear interaction of quasiharmonic longitudinal waves, which propagate in solid porous material, was investigated theoretically. It was shown that as a result of such interaction between low-frequency waves (vibration field) and high-frequency waves (ultrasound) an ultrasound wave of summarized frequency would be generated. This newly generated wave can be in a phase-group synchronism with the vibration field. Analytical analysis qualitatively agrees with experimental data of ultrasound generation through seismic load.

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Section: Introductionmentioning

confidence: 99%