Research on two-dimensional phononic crystal with magnetorheological material

Abstract

In this letter, we used plane wave expansion (PWE) method to compute the band structure of a two-dimensional phononic crystal of epoxy embedded in Magnetorheological elastomers (MRE). Phononic crystals (PCs), also named acoustic band gap (ABG) materials are composites made of periodic distributions of scatters embedded in matrix. The most interesting phenomena of these structures is the existence of complete phononic band gaps, which forbid the propagation of elastic or acoustic waves regardless of mode or wave vector. Potential applications of these structures include acoustic filters, sound and vibration isolators, and acoustic waveguide et al.