Advances in Acoustics and Vibration / 2009 / Article / Tab 1

Research Article

Designing 2D Phononic Crystal Slabs with Transmission Gaps for Solid Angle as well as Frequency Variation

Table 1

Specification of a PC slab that has been optimized by DE to produce small transmittance in the band 45–65 kHz. Corresponding transmittance results are shown in Figures 4 and 5.

Optimum 163.0 dB

Scatterer compressional-wave velocity 𝛼 2995.6 m/s
Scatterer shear-wave velocity 𝛽 1200.0 m/s
Scatterer density 𝜌 14.000 kg/dm3
Layer thickness 13.292 mm
Largest scatterer radius 𝑟 m a x 4.2702 mm
Smallest scatterer radius 𝑟 m i n 4.2300 mm
Lattice period 𝑑 22.670 mm

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