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Elastic properties of a magnetic fluid with an air cavity retained by levitation forces

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Abstract

The paper describes the process of an air cavity rising in a magnetic fluid filling a tube with a bottom, transport, and retention of the cavity by magnetic levitation forces. The elastic and dissipative properties of a vibratory system with an inertial element that is a column of a magnetic fluid over an air cavity are considered. The possibility of using a transported air cavity as a movable reflector for a sound wave is evaluated.

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Correspondence to V. M. Polunin.

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Original Russian Text ©V.M. Polunin, M.L. Boev, Myo Min Tan, G. V. Karpova, L.I. Roslyakova, 2013, published in Akusticheskii Zhurnal, 2013, Vol. 59, No. 1, pp. 63–69.

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Polunin, V.M., Boev, M.L., Tan, M.M. et al. Elastic properties of a magnetic fluid with an air cavity retained by levitation forces. Acoust. Phys. 59, 56–61 (2013). https://doi.org/10.1134/S1063771012060127

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