The Influence of Medium Movement on the Occurrence of Band Gaps in Quasi Two Dimensional Phononic Crystals |
| S. Garusa, W. Sochackia, J. Rząckib
aDepartment of Mechanics and Fundamentals of Machinery Design, Faculty of Mechanical Engineering and Computer Science, Czestochowa University of Technology, Dąbrowskiego 73, 42-201 Częstochowa, Poland bDepartment of Physics, Faculty of Production Engineering and Materials Technology, Czestochowa University of Technology, Dąbrowskiego 73, 42-201 Częstochowa, Poland |
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| Phononic quasi-two-dimensional structures, due to their properties, namely the lack of propagation of selected frequency ranges of the mechanical wave, can be used as filters of acoustic waves. In the paper, an analysis of the propagation of mechanical waves in these highly dispersive structures in the conditions of a moving medium was carried out. The influence of the number of metaatom layers on the transmission of a mechanical wave for different medium velocities was analysed. |
DOI:10.12693/APhysPolA.144.284 topics: phononic crystal, finite-difference time domain (FDTD), moving medium, band gaps |