The Response of Two Fluid-Coupled Plates to an Incident Pressure Pulse.
Abstract
The response of two plates coupled by an acoustic fluid to an incident pressure pulse is calculated using flat-plate theory. In addition, a similar calculation is done by a different method, where the interior fluid between the plate is modeled as a lumped parameter system of masses and springs. It is shown that as more masses and springs (fluid elements) are used that this solution approaches the continuous fluid solution. The cases where the second plate is backed by water and air are computed using both methods. The lumped-parameter model of the interior fluid is found to degrade the detail of the responses of the plates compared to the continuous-fluid solution, but the general features of the response (timing and magnitude of the peak velocities, for example) are not greatly affected even for relatively crude representations of the fluid, of two to five fluid elements. The calculations are carried out to better understand the interaction of a shockwave from an underwater explosion and the sail appendage of a submarine. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 12, 1981
- Accession Number
- ADA104801
Entities
People
- R. L. Bort
- R. S. Schechter
Organizations
- United States Naval Research Laboratory