Title :
Elastic wave propagation in a microstructured acoustic fiber
Author :
Nikitov, Sergey A. ; Popov, Roman S. ; Lisenkov, Ivan V. ; Kim, Chul Koo
Author_Institution :
Inst. for Radioengineering & Electron., Moscow
fDate :
8/1/2008 12:00:00 AM
Abstract :
Elastic wave propagation along the structure of hollow cylinders in a linear isotropic medium is investigated. The multipole method for modeling elastic waves propagation in such structures is formulated and implemented. Using the multipole method, dispersion dependencies of the structures (microstructured fibers) containing 3, 6, and 7 hollow cylinders are calculated. Comparison with wave dispersion properties along one cylinder is made. Also, an approximate physical model based on an equivalent coaxial waveguide and multipole method is proposed. Exploiting this model, wave dispersion of the wave propagating along a structure with 18 hollow cylinders is calculated. Validation of the model is also proposed.
Keywords :
acoustic materials; acoustic wave propagation; acoustic waveguides; dispersion (wave); elastic waves; elastic wave propagation modeling; equivalent coaxial waveguide; hollow cylinder; linear isotropic medium; microstructured acoustic fiber; microstructured fiber dispersion dependencies; multipole method; wave dispersion properties; Acoustic propagation; Acoustic waves; Crystal microstructure; Crystalline materials; Electromagnetic propagation; Electromagnetic scattering; Engine cylinders; Optical fibers; Photonic crystals; Physics; Acoustics; Computer Simulation; Equipment Design; Equipment Failure Analysis; Manufactured Materials; Models, Theoretical; Scattering, Radiation;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2008.866
