Comparison of SEA and PFFEA predictions of in-air and underwater radiated noise from a ring-stiffened cylinder
Keywords:Acoustic noise measurement, Cylinders (shapes), Finite element method, Mathematical models, Statistical methods, Vibrations (mechanical), Power flow finite element analysis (PFFEA), Ring-stiffened cylinder, Software package SEAM, Software package SNAP, Statistical energy analysis (SEA), Underwater radiated noise
AbstractThe in-air and underwater experiments performed with a ring-stiffened cylinder are described. Broadband excitation was employed for the measurement of input mobility's response along with the resulting radiated noise in-air and underwater. These data were compared by statistical energy analysis (SEA) and power flow finite element analysis (PFFEA). The radiated noise predictions were made with a boundary element based post-processing software. SNAP, embodiment of PFFEA, underpredicted exterior radiated noise while SEAM, a software implementation of SEA, underpredicted interior noise.
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