摘要
声学黑洞(Acoustic Black Hole,ABH)具有宽频高效的振动控制能力,且其结构简单、易于实现,因此在结构振动控制领域有广泛应用前景。动力吸振器是工程中常用的振动控制装置,其对低频振动的控制效果良好,但是存在振动控制频带窄的问题。结合声学黑洞结构和动力吸振器原理设计一维声学黑洞动力吸振器(One-dimensional Acoustic Black Hole Dynamic Vibration Absorber,1D ABH-DVA),将1D ABH-DVA作为动力吸振元件附加于主结构,通过1D ABH-DVA自身丰富的动态特性和高效的振动能量吸收耗散能力实现对主结构宽频稳定的振动控制。探索附加1D ABH-DVA板结构的动态特性,验证1D ABH-DVA对板结构宽频稳定振动峰值的抑制效果,分析1D ABH-DVA的减振特性,并探究1D ABH-DVA对板结构的振动控制机理,对于声学黑洞的应用研究具有参考价值。
Acoustic black hole(ABH)possesses broad-frequency and high efficient vibration control capability.The structure of ABH is simple and ABH can be manufactured easily,which is widely used to solve problems of structural vibration and control.While dynamic vibration absorber(DVA)is commonly used equipment for vibration reduction.Although DVAs have good vibration control effects in the low frequency range,their vibration control frequency band is narrow.In this paper,an 1D ABH-DVA was designed based on the principles of ABH and DVA and attached to the primary plate structure as an additional DVA.Due to the rich dynamic characteristics and efficient vibration energy absorption and dissipation ability of the 1D ABH-DVA,it can realize broadband vibration control for the primary plate structure.The dynamic characteristics of the plate structure with the additional 1D ABH-DVA were explored,and its suppression effect on the broadband stable vibration peak of the plate was verified.The vibration reduction characteristics of 1D ABH-DVA were analyzed,and the potential mechanism of 1D ABH-DVA for plate vibration control was analyzed.This work has a reference value for further research on the application of ABHs.
作者
郭新
李伟
温华兵
史自强
GUO Xin;LI Wei;WEN Huabing;SHI Zhiqiang(School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212100,Jiangsu,China)
出处
《噪声与振动控制》
北大核心
2025年第5期98-103,共6页
Noise and Vibration Control
基金
国防科技重点实验室基金资助项目(6142204190510)。
关键词
振动与波
声学黑洞
动力吸振器
局部附连阻抗法
板结构
阻尼特性
vibration and wave
acoustic black hole
dynamic vibration absorber
local attachment impedance method
plate structure
vibration damping characteristics
