The Study of Characteristics of Sphere-Radial Phononic Crystals
By deducing the spherical elastic wave equation in theory, the concept of sphere-radial phononic crystal is proposed, and then the equations to determine the acoustic band structures is deduced. A numerical example is given for steel/nitrile rubber phononic crystal. The numerical simulation results suggest that the band gaps of sphere-radial phononic crystals do exist, which have better attenuation characteristics and practical application performance than the one-dimensional phononic crystals.
Q. H. Wen "The Study of Characteristics of Sphere-Radial Phononic Crystals", Advanced Materials Research, Vols. 211-212, pp. 609-614, 2011