Search

Phononic crystal, as an artificial crystal structure composed of a variety of materials, has the characteristics of small size, vibration reduction in a specific frequency band, and noise reduction can be designed. The vibration and noise reduction capabilities of phononic crystals have an important relationship with the band gap level. Therefore, first of all, the designed structure of the coated Rubik's cube phononic crystal is proposed, and the composition structure of the coated Rubik's cube phononic crystal is introduced; secondly, the influencing factors of the band gap characteristics of the phononic crystal are analyzed. Factors such as size are used to analyze the band gap characteristics of phononic crystals. In order to further determine the complete band gap characteristics of the coated Rubik's cube phononic crystal and verify the vibration and noise reduction capabilities of the phononic crystal, based on the coated Rubik's cube phononic crystal unit cell, a phononic crystal plate was designed, and a transmission loss solution model was built. Phononic crystal transmission loss analysis. In addition, the concept of defect state phononic crystal is introduced, considering the size defect of the scatterer and the material defect of the scatterer, to optimize the transmission loss capability of the phononic crystal. [ABSTRACT FROM AUTHOR]