Accession Number:

AD0614418

Title:

THE EFFECTS OF FLUID RESONANCE ON THE BOUNDARY STRESSES OF A FLUID-FILLED CAVITY,

Descriptive Note:

Corporate Author:

RAND CORP SANTA MONICA CALIF

Personal Author(s):

Report Date:

1965-04-01

Pagination or Media Count:

40.0

Abstract:

The problem treated in this memorandum is the determination of the dynamic stresses at the boundary of a cavity filled with an inviscid compressible fluid during the passage of a plane dilatational wave train. The steadystate response or admittance function is obtained for a circular cavity of infinite extent. It is found that at critical frequencies the intensity of the boundary stresses can be significantly higher than that predicted under static loading. It is shown that the high intensities are due to resonance in the fluid and that the resonance conditions can be predicted once the properties of the medium and the fluid are known. Computations are presented for a case representing a water-filled, 20-ftdiameter cavity in rock. The lowest frequency at which resonance occurs lies above 100 cps in this case. It is indicated that the transient response to an aperiodic disturbance could be obtained through the use of a Fourier convolution. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE