This documentation describes a software for prediction of band gaps in phononic materials.
The phononic materials are bi-phasic elastic media with periodic structure and with large contrasts between the stiffness parameters associated with different phases, whereas their specific mass is comparable. For certain frequency ranges, such elastic structures can suppress the elastic wave propagation, i.e. they exhibit the band gaps. We consider piezoelectric composite materials where the large contrasts are related not only to elasticity, but also to other piezoelectric parameters, namely the piezoelectric coupling coefficients and the dielectricity. The software can predict distribution of the band gaps in such media for stationary or long guided waves very effectively, due to the use of the homogenization based two-scale modeling.
Keywords: phononic materials; band gaps; elasticity; piezo-elasticity