ACOUSTICALLY INDUCED VIBRATION OF AND SOUND RADIATION FROM, BEAMS INSIDE AN ENCLOSURE

摘要

The response of a single cylindrical beam to pure-tone sound in a rectangular reverberation chamber is analyzed. The variation of the response with position within the chamber and the effect of proximity of other similar, parallel beams is considered. A reciprocity relation is established between the response of a beam to sound in the chamber and the sound radiation by such motion when otherwise generated; this relation is found to be valid even for non-diffuse fields, below the Schroeder "large room" frequency. The sound radiation from a beam in multimode vibration is also analyzed.