The invention discloses a composite raft frame and a design method thereof, and relates to the technical field of vibration reduction. The design method of the composite raft frame comprises the following steps: determining a target frequency band of a phononic crystal unit cell; determining the number of cycles of photonic crystal unit cells according to the target frequency band; determining the target size of the phononic crystal unit cells according to the period number of the phononic crystal unit cells; and determining the radius of the acoustic black hole according to the target frequency band of the phononic crystal unit cell. According to the design method of the composite raft frame, design of the composite raft frame, the photonic crystal unit cells in the composite raft frame and the acoustic black holes can be achieved, vibration reduction of a specific low-frequency band of the composite raft frame is achieved by combining the photonic crystal unit cells and the acoustic black holes, and broadband vibration reduction of the composite raft frame from the low-frequency band to the high-frequency band is achieved.
本申请公开了一种复合筏架及其设计方法,涉及减振技术领域。该复合筏架的设计方法包括:确定声子晶体单胞的目标频带;根据目标频带确定声子晶体单胞的周期数量;根据声子晶体单胞的周期数量确定声子晶体单胞的目标尺寸;根据声子晶体单胞的目标频带确定声学黑洞的半径。本申请的复合筏架的设计方法能够实现对复合筏架、复合筏架中的声子晶体单胞、声学黑洞的设计,并且通过将声子晶体单胞和声学黑洞结合,既实现对复合筏架特定低频带的减振,又实现了对复合筏架低频带至高频带的宽带减振。
Composite raft frame and design method thereof
复合筏架及其设计方法
06.05.2025
Patent
Elektronische Ressource
Chinesisch
Europäisches Patentamt | 2025
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