Sound Radiation from a Cylindrical Pipe Composed of Concentric Layers of Fluids and Elastic Solids.
ADMIRALTY MARINE TECHNOLOGY ESTABLISHMENT TEDDINGTON (ENGLAND)
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The cylindrical pipe is composed of a number of concentric layers of elastic solids and fluids. It is excited by time-harmonic mechanical point forces or acoustic sources. The exact linear equations of elastodynamics, visco-dynamics and acoustics are solved to obtain, via the finite element method, a matrix equation which connects interface displacements and external forces in the spectral domain. Far-field sound radiation and the wavenumbers of free-waves are obtained from this relation. Numerical results include a comparison of sound radiation levels obtained from the exact theory and a shell theory. Author
- Theoretical Mathematics
- Pumps, Filters, Pipes, Tubing, Fittings and Valves
- Radiofrequency Wave Propagation