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Multi-cascade phononic crystal vibration isolator
According to a multi-cascade phononic crystal vibration isolator, phononic crystal cells are arranged in the multi-cascade phononic crystal vibration isolator, a band gap within the frequency band range of 50 Hz to 200 Hz and 1000 Hz to 2000 Hz is generated, vibration of a specific frequency band is eliminated through the band gap, and therefore vibration reduction of a track is achieved, the multi-cascade phononic crystal vibration isolator is of a cylindrical structure and is divided into a vibration isolator outer cylinder structure and a vibration isolator inner cylinder structure; the vibration isolator inner cylinder structure is composed of an inner cylinder and a multi-cascade photonic crystal vibration isolator main body structure, the multi-cascade photonic crystal vibration isolator main body structure is placed in the inner cylinder and is formed by combining a plurality of photonic crystal cells and a bearing top plate, and each cell is composed of a mass element and an elastic element. Characteristics of the circumferential elastic element are brought into full play, and parameter optimization design is facilitated; the isolator has the advantages of being convenient to install, good in compatibility with an outer cylinder and an inner cylinder of an existing floating slab vibration isolator and the like, and has wide applicability in the field of rail transit vibration and noise reduction.
一种多级联声子晶体隔振器，通过设置多级联声子晶体隔振器内置声子晶体元胞，产生50～200Hz，1000‑2000Hz频带范围内的带隙，利用所述带隙实现对特定频段振动的消除从而实现轨道的减振，减小其对外的振动传播。所述多级联声子晶体隔振器为一个筒状结构，分为隔振器外筒与隔振器内筒结构两部分；所述的隔振器内筒结构由内筒与多级联声子晶体隔振器主体结构构成，所述的多级联声子晶体隔振器主体结构放置于内筒内，由若干声子晶体元胞及承载顶板组合而成，每个元胞由质量元件与弹性元件构成。本发明充分发挥圆周弹性元件的特性，便于参数优化设计；其安装便捷、与现有浮置板隔振器外筒、内筒的兼容性好等特点，使其在轨道交通减振降噪领域有很广泛的适用性。
Multi-cascade phononic crystal vibration isolator
According to a multi-cascade phononic crystal vibration isolator, phononic crystal cells are arranged in the multi-cascade phononic crystal vibration isolator, a band gap within the frequency band range of 50 Hz to 200 Hz and 1000 Hz to 2000 Hz is generated, vibration of a specific frequency band is eliminated through the band gap, and therefore vibration reduction of a track is achieved, the multi-cascade phononic crystal vibration isolator is of a cylindrical structure and is divided into a vibration isolator outer cylinder structure and a vibration isolator inner cylinder structure; the vibration isolator inner cylinder structure is composed of an inner cylinder and a multi-cascade photonic crystal vibration isolator main body structure, the multi-cascade photonic crystal vibration isolator main body structure is placed in the inner cylinder and is formed by combining a plurality of photonic crystal cells and a bearing top plate, and each cell is composed of a mass element and an elastic element. Characteristics of the circumferential elastic element are brought into full play, and parameter optimization design is facilitated; the isolator has the advantages of being convenient to install, good in compatibility with an outer cylinder and an inner cylinder of an existing floating slab vibration isolator and the like, and has wide applicability in the field of rail transit vibration and noise reduction.
一种多级联声子晶体隔振器，通过设置多级联声子晶体隔振器内置声子晶体元胞，产生50～200Hz，1000‑2000Hz频带范围内的带隙，利用所述带隙实现对特定频段振动的消除从而实现轨道的减振，减小其对外的振动传播。所述多级联声子晶体隔振器为一个筒状结构，分为隔振器外筒与隔振器内筒结构两部分；所述的隔振器内筒结构由内筒与多级联声子晶体隔振器主体结构构成，所述的多级联声子晶体隔振器主体结构放置于内筒内，由若干声子晶体元胞及承载顶板组合而成，每个元胞由质量元件与弹性元件构成。本发明充分发挥圆周弹性元件的特性，便于参数优化设计；其安装便捷、与现有浮置板隔振器外筒、内筒的兼容性好等特点，使其在轨道交通减振降噪领域有很广泛的适用性。
Multi-cascade phononic crystal vibration isolator
一种多级联声子晶体隔振器
YANG XINWEN (author) / ZHANG ZHAO (author) / WANG YONGJIAN (author) / ZHAO ZHIJUN (author)
2021-04-30
Patent
Electronic Resource
Chinese
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