Multi-resonator combined structure low-frequency broadband vibration suppression method

The invention provides a low-frequency broadband vibration suppression method for a multi-resonator combined structure, and the method comprises the following steps: S1, building a radiation sound field sound pressure function through a Rayleigh integral formula when a local resonance structure is embedded in a baffle with four simply supported sides and infinite rigidity; s2, for the condition that the four edges of the substrate are simply supported by an infinite rigid baffle, a substrate transverse bending displacement function is constructed, and substrate transverse bending displacement is expressed as linear superposition of a vibration mode function; s3, establishing an acoustic vibration coupling model of a multi-resonator combination local resonance periodic structure considering fluid load influence; s4, substituting the sound pressure function of the radiation sound field and the transverse bending displacement function of the substrate into the sound-vibration coupling model of the local resonanc