Exploiting pattern transformation to tune phononic band gaps in a two-dimensional granular crystal.

Göncü, JASA-EL Exploiting pattern transformation to tune phononic band gaps in a two-dimensional granular crystal

Göncü, JASA-EL Exploiting pattern transformation to tune phononic band gaps in a two-dimensional granular crystal F. Göncü and S. Luding

Mechanically tunable phononic band gaps in three-dimensional periodic elastomeric structures

Three-dimensional periodic structures have many applications in acoustics and their properties are strongly related to structural details. Here we demonstrate through simulations the ability to tune the phononic band gaps of 3D periodic elastomeric structures using deformation. The elastomeric nature of the material makes the transformation of the band gaps a reversible and repeatable process, ...

Complete band gaps in two-dimensional phononic crystal slabs.

The propagation of acoustic waves in a phononic crystal slab consisting of piezoelectric inclusions placed periodically in an isotropic host material is analyzed. Numerical examples are obtained for a square lattice of quartz cylinders embedded in an epoxy matrix. It is found that several complete band gaps with a variable bandwidth exist for elastic waves of any polarization and incidence. In ...

Tunable phononic crystals with anisotropic inclusions

We present a theoretical study on the tunability of phononic band gaps in two-dimensional phononic crystals consisting of various anisotropic cylinders in an isotropic host. A two-dimensional plane-wave expansion method was used to analyze the band diagrams of the phononic crystals; the anisotropic materials used in this work include cubic, hexagonal, trigonal, and tetragonal crystal systems. B...