Application of Frequency Interpolation to Acoustic-Structure Interaction Problems
Abstract
For coupled structural acoustic scattering problems, the spectral response often varies rapidly over a large dynamic range, requiring the response to be calculated at many closely spaced frequencies. In such problems, the computation time is often dominated by the calculation of acoustic interactions which do not vary rapidly with frequency. It is shown in this report that large savings in computation time can be achieved without significant loss of accuracy by interpolating on appropriately scaled intermediate acoustic quantities. These quantities are computed on a coarse frequency grid and then interpolated to any desired frequency resolution in order to obtain the final response. The overall savings in computation time is typically more than an order of magnitude. Acoustics; Acoustic scattering; Vibration of structures; Target strength.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1989
- Accession Number
- ADA219330
Entities
People
- G. W. Benthien