IntechOpen eBooks, Год журнала: 2024, Номер unknown
Опубликована: Июль 3, 2024
Nowadays, acoustic black holes (ABHs) are very popular for producing efficient vibration reduction at high frequencies in combination with some damping mechanisms. However, its low-frequency performance is hard to improve since the ABH effect principally occurs beyond cut-on frequency. Fortunately, periodic configuration offers bandgaps below that frequency wave attenuation. In this chapter, a topological structure suggested produce new bandgap low frequencies, by taking supercell and decreasing distance. The Rayleigh-Ritz method (WRRM) adopted compute complex dispersion curves. Examinations of curves transmissibilities confirm efficiency capability proposed ABHs.
Язык: Английский