基于环状螺旋声学黑洞的管道结构振动抑制研究  

Vibration suppression of pipeline structure based on circular spiral acoustic black hole

作　　者：庄秋阳 季宏丽[1] 邹宇琪 黄薇[2] 裘进浩[1] ZHUANG Qiu-yang;JI Hong-li;ZOU Yu-qi;HUANG Wei;QIU Jin-hao(State Key Laboratory of Mechanics and Control for Aerospace Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京航空航天大学航空航天结构力学及控制全国重点实验室,江苏南京210016 [2]南京理工大学机械工程学院,江苏南京210094

出　　处：《振动工程学报》2024年第9期1501-1512,共12页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(52241103,U2241261,52105107);中央高校基本科研业务费资助项目(NE2024002,NP2024112)。

摘　　要：传统的附加式声学黑洞(ABH)结构主要针对板状结构的振动抑制进行设计,对于工程中广泛存在的管道结构难以适用。为解决管道结构的振动抑制问题,提出了一种能够应用在管道结构上的附加式ABH装置“环状螺旋式ABH减振器(CSABH)”。通过将ABH区域设计成螺线形式,增加了减振器的模态密度,使其与主结构更好地耦合。以铝管为基准结构,利用有限元方法探究了CSABH的动力学特性,进行了时域波聚集分析与频域响应分析。结果表明,CSABH具有良好的波聚集特性,能实现对管道20~5000 Hz的振动抑制,且当管道的约束条件和温度条件发生改变时,相同参数的CSABH仍然能够发挥良好的宽频减振效果,展现了减振的鲁棒性。通过实验验证了CSABH在管道结构的振动控制中具有宽频、高效和鲁棒性高的特点。The traditional additional acoustic black hole(ABH)structure is mainly designed for vibration suppression of plate struc⁃tures,but it is difficult to be applied to pipe structures that are widely available in engineering.In order to solve the vibration sup⁃pression problem of pipe structures,a new additional ABH device,‘Circular Spiral ABH Damper(CSABH)’is proposed to be applied to pipe structures.By designing the ABH area in the form of a spiral,the modal density of the damper is increased,and a better coupling with the main structure is achieved.The results show that the CSABH has good wave aggregation characteristics and can achieve a vibration suppression of 20~5000 Hz for the pipe.Besides,when the pipe constraints and temperature conditions are changed,the CSABH with the same parameters can still play a good wide frequency damping effect,showing the robustness of the damping.The wide frequency,high efficiency and high robustness of CSABH in the vibration control of pipeline structures are verified experimentally.

关 键 词：振动抑制 声学黑洞 管道结构 宽频 鲁棒性 

分 类 号：TB535[理学—物理]