Analysis of damping characteristics in carbon fiber sheet embedded with an Acoustic Black Hole structure

Abstract Acoustic Black Hole (ABH) is a newly developed passive control method. It commonly uses the gradual change of vertical thickness structure to propagation and aggregation bending waves, which has excellent performance in structural vibration suppression other aspects. Carbon fiber most famous composite material, low density, high strength stiffness. The dynamic characteristics carbon sheet with ABH were analyzed by finite element method, was further verified experiments. results show that frequency range 180~3000 Hz, level CFRP-ABH reduced 6~20 dB compared uniform plate, showing broadband reduction performance.