Frontiers of Mechanical Engineering
>> 2010,
Volume 5,
Issue 4
doi:
10.1007/s11465-010-0105-y
Existence of complete band gaps in 2D steel-water phononic crystal with square lattice
College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
Available online: 2010-12-05
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Abstract
This paper theoretically and experimentally studies the existence of complete band gaps in two-dimensional (2D) phononic crystal consisting of parallel steel rods in water with square lattice. The band structure of phononic crystal is calculated by a plane wave expansion (PWE) method. Based on the well-known ultrasonic immersion transmission technique, the overlapping transmission spectra of acoustic waves, a complete band gap, is experimentally measured along the two high-symmetry directions of the first irreducible Brillouin zone. There is a very good agreement between the experimental result and the range of frequencies of the complete band gap.
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