Acoustic and flexural wave scattering from a three-member junction

Douglas A. Rebinsky, Andrew N. Norris

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


A three-member junction is formed by a pair of semi-infinite plates in contact with fluid on one side and a mechanicals tructure on the other. The latter is described by an impedance matrix. The excitation is either a straight crested flexural wave traveling on one of the fluid-loaded plates and obliquely incident on the line junction, or an acoustic plane-wave incident from any direction in the fluid. The generals olution for this type of scattering problem is derived and illustrative numerical examples are given. The admittance matrix for the fluid-loaded plate junction without the attachment plays a central role in the solution. It is verified that the general solution reduces to that for a pair of plates with clamped and welded junction conditions as limiting cases when the frame impedance is zero and infinite. The numerical results display two well-defined characteristic critical angles for transmission of structurael nergy and diffraction of acoustic pressure.

Original languageEnglish (US)
Pages (from-to)3309-3319
Number of pages11
JournalJournal of the Acoustical Society of America
Issue number6
StatePublished - Dec 1995

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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