### ASA 128th Meeting - Austin, Texas - 1994 Nov 28 .. Dec 02

## 4pPAb8. Acoustic and flexural wave interaction at the junction of two
fluid-loaded plates.

**Andrew N. Norris
**

**
Douglas A. Rebinsky
**

**
**
*Dept. of Mech. and Aerosp. Eng., Rutgers Univ., Piscataway, NJ 08855-0909
*

*
*
**G. Wickham
**

**
**
*Univ. of Manchester, Manchester M13 9PL, UK
*

*
*
A general solution is developed for the acoustic and structural scattered
response from the junction of two flat plates under unilateral fluid loading.
The plates are modeled by the classical theory of flexure, and the solution is
found using the Wiener--Hopf technique for the dual integral equations for the
unknown pressure on the plates. Explicit formulas are obtained for the pressure
transform when the plates are in welded or clamped contact, and corresponding
explicit and relatively simple expressions are given for the various
diffraction coefficients associated with the fluid/structure interaction.
Numerical results for the redistribution of energy from flexural to flexural
plus acoustic at a thickness discontinuity will be discussed in detail. [Work
supported by ONR.]