Acoustic radiation from vibrating surfaces at characteristic frequencies

DOI10.1121/1.390480zbMath0529.73034OpenAlexW2033366509MaRDI QIDQ3311776

Christopher M. Piaszczyk, J. M. Klosner

Publication date: 1984

Published in: The Journal of the Acoustical Society of America (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1121/1.390480

zbMATH Keywords

acoustic radiationleast-squares procedureapplied to cylindrical transducer problemapproximate surface impedance functionat characteristic frequencies system matrix becomes ill-conditionedat noncharacteristic frequencies, resulting system of linear algebraic equations solved directlycomputation of approximate farfield pressuresiterative overdetermination schemesolution used to compute next-order approximationsurface integral Helmholtz equation discretizedvalues of acoustic pressure at boundary nodal points

Mathematics Subject Classification ID

Ill-posed problems for PDEs (35R25) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05) Waves in solid mechanics (74J99) Numerical and other methods in solid mechanics (74S99)

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