Acoustic Bloch Wave Propagation in a Periodic Waveguide
Abstract
The propagation of linear, dissipative acoustic Bloch waves in a periodic waveguide is investigated theoretically and experimentally. The waveguide under study is a rigid, fluid-filled, rectangular waveguide that is loaded with a periodic array of rigidly terminated rectangular side branches. Conditions for the existence of Bloch waves in the periodic waveguide are presented. Analytic expressions for the dispersion relation, the impedance function, and the Bloch wave function are derived. Measurements verify the predicted passband/stopband structure of the dispersion relation and show good agreement with the theory.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 24, 1991
- Accession Number
- ADA244068
Entities
People
- Charles E. Bradley
Organizations
- University of Texas at Austin