Local resonance sound absorption structure containing radius gradient change vibrator and coating layer

• Main Authors: GAO JINTONG, SHI JIE, HU BO, ZHANG LANYUE, ZHANG HAOYANG, LI SONG, CHEN CHENG
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2024
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; SOUND-PRODUCING DEVICES

The invention belongs to the field of underwater sound absorption covering layers, and particularly relates to a local resonance sound absorption structure containing a radius gradient change vibrator and a coating layer, which is mainly used for solving the technical problems of high sound absorption performance and wide sound absorption frequency band in the field of underwater sound absorption. A base layer is arranged on the lower bottom surface of the sound absorption layer structure to form an integrated structure; the cladding layer radius and the vibrator radius of the local resonance structure adopt gradient change design, so that the sound absorption frequency band width can be effectively increased, and the device is suitable for being applied to the aspects of low-frequency broadband vibration and noise reduction; the low-frequency broadband sound absorption performance can be obtained through the small size, the low-frequency broadband sound absorption device is suitable for being applied to low-