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A platform for research: civil engineering, architecture and urbanism
Vibration absorbing device
The invention provides a vibration absorption device which comprises a mounting base and at least one dynamic vibration absorber, a first sleeve cavity and at least one second sleeve cavity are formed in the mounting base, and the first sleeve cavity is used for being arranged on a structure subjected to vibration reduction in a sleeving mode; the inherent frequency of the dynamic vibration absorber is matched with the fixed frequency of a vibration-damped structure, and the dynamic vibration absorber is made of a metal material; the dynamic vibration absorber comprises a main body part and a black hole part which are integrally connected, the second sleeve cavity is arranged on the main body part in a sleeving mode and locked, the thickness of the section of the black hole part in the vertical direction is gradually reduced in a power function mode in the direction away from the main body part, and the thickness of the section of the main body part in the vertical direction is the same as the maximum thickness of the section of the black hole part in the vertical direction. According to the vibration absorption device, elastic waves on the structure subjected to vibration reduction can be rapidly transmitted to the dynamic vibration absorber through the mounting base, meanwhile, the dynamic vibration absorber expands the frequency range of vibration reduction and noise reduction through the acoustic black hole effect, and the vibration reduction and noise reduction effect is improved.
本申请提供了一种吸振装置，包括安装座及至少一个动力吸振器，安装座上形成有第一套腔及至少一个第二套腔，第一套腔用于套设于被减振结构上；动力吸振器的固有频率与被减振结构的固定频率相匹配，动力吸振器采用金属材料制成；动力吸振器包括一体连接的主体部及黑洞部，第二套腔套设于主体部上并锁紧，黑洞部沿竖直方向上的截面厚度沿远离主体部的方向呈幂函数逐渐减小，主体部沿竖直方向上的截面厚度与黑洞部沿竖直方向上的最大截面厚度相同。本申请的吸振装置通过安装座能够将被减振结构上的弹性波快速传递至动力吸振器，同时动力吸振器利用声学黑洞效应，拓展了减振降噪的频率范围，提高了减振降噪效果。
Vibration absorbing device
The invention provides a vibration absorption device which comprises a mounting base and at least one dynamic vibration absorber, a first sleeve cavity and at least one second sleeve cavity are formed in the mounting base, and the first sleeve cavity is used for being arranged on a structure subjected to vibration reduction in a sleeving mode; the inherent frequency of the dynamic vibration absorber is matched with the fixed frequency of a vibration-damped structure, and the dynamic vibration absorber is made of a metal material; the dynamic vibration absorber comprises a main body part and a black hole part which are integrally connected, the second sleeve cavity is arranged on the main body part in a sleeving mode and locked, the thickness of the section of the black hole part in the vertical direction is gradually reduced in a power function mode in the direction away from the main body part, and the thickness of the section of the main body part in the vertical direction is the same as the maximum thickness of the section of the black hole part in the vertical direction. According to the vibration absorption device, elastic waves on the structure subjected to vibration reduction can be rapidly transmitted to the dynamic vibration absorber through the mounting base, meanwhile, the dynamic vibration absorber expands the frequency range of vibration reduction and noise reduction through the acoustic black hole effect, and the vibration reduction and noise reduction effect is improved.
本申请提供了一种吸振装置，包括安装座及至少一个动力吸振器，安装座上形成有第一套腔及至少一个第二套腔，第一套腔用于套设于被减振结构上；动力吸振器的固有频率与被减振结构的固定频率相匹配，动力吸振器采用金属材料制成；动力吸振器包括一体连接的主体部及黑洞部，第二套腔套设于主体部上并锁紧，黑洞部沿竖直方向上的截面厚度沿远离主体部的方向呈幂函数逐渐减小，主体部沿竖直方向上的截面厚度与黑洞部沿竖直方向上的最大截面厚度相同。本申请的吸振装置通过安装座能够将被减振结构上的弹性波快速传递至动力吸振器，同时动力吸振器利用声学黑洞效应，拓展了减振降噪的频率范围，提高了减振降噪效果。
Vibration absorbing device
吸振装置
XIAO YAN (author) / DU YANLIANG (author) / REN WEIXIN (author) / XU HONGBIN (author) / YE KUN (author) / SHEN WENAI (author) / SHENG XI (author) / ZHOU YU (author)
2022-04-08
Patent
Electronic Resource
Chinese
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau