|
|
声学黑洞耦合动力吸振器复合梁振动特性研究
|
Abstract:
近些年，声学黑洞(Acoustic Black Hole, ABH)结构由于其在控制结构振动和噪声上的优异表现，得到了广泛的关注。将动力吸振器(Dynamic Vibration Absorber, DVA)和声学黑洞理论结合，可以在包括低频的宽频带内实现更好的减振效果。首先针对ABH结构梁第二阶共振频率设计并测试DVA，并通过振动实验分别测试ABH结构梁附加DVA (ABH + DVA)与附加阻尼层(ABH + Damp)的减振控制效果。然后，建立有限元模型并用实验结果进行验证。最后通过有限元计算，研究了ABH + DVA的宽频减振性能以及DVA参数对减振效果的影响。结果证明，ABH + DVA在目标频率附近有着更好的减振效果，并且在非目标频率的其他高频共振峰也能实现振动控制。
In recent years, acoustic black hole (ABH) structures have attracted much attention due to their excellent performance in controlling structural vibration and noise. The combination of Dynamic Vibration Absorber (DVA) and acoustic black hole theory can effectively suppress the vibration response over a wide frequency band, including low frequencies. Firstly, the DVA is designed and tested for the second resonance frequency of the ABH beam, and the vibration damping effect of the additional DVA (ABH + DVA) and the damping layer (ABH + Damp) of the ABH beam was tested by vibration experiments. Then, the finite element model is developed and verified through the experimental results. Finally, the wide-band vibration damping characteristic of ABH + DVA and the influence of DVA parameters on the vibration damping effect are studied by finite element calculation. The results show that ABH + DVA has vibration attenuation advantages near the target frequency and also can achieve vibration reduction at other higher and non-target resonant frequencies.
| [1] | 沈超明, 黄杰, 陈默林, 等. 基于多层S型局域振子的声子晶体双层梁结构带隙特征研究[J]. 振动与冲击, 2023, 42(2): 197-204 + 234. |
| [2] | Krylov, V.V. and Tilman, F. (2004) Acoustic ‘Black Holes’ for Flexural Waves as Effective Vibration Dampers. Journal of Sound and Vibration, 274, 605-619. https://doi.org/10.1016/j.jsv.2003.05.010 |
| [3] | Mironov, M.A. (1988) Propagation of Flexural Wave in a Plate Whose Thickness Decreases Smoothly to Zero in a Finite Interval. Soviet Physics-Acoustics, 34, 318-319. |
| [4] | Tang, L., Cheng, L. (2017) Broadband Locally Resonant Band Gaps in Periodic Beam Structures with Embedded Acoustic Black Holes. Journal of Applied Physics, 121, 605-623. https://doi.org/10.1063/1.4983459 |
| [5] | Deng, J., Guasch, O., Maxit, L., et al. (2022) A Metamaterial Consisting of an Acoustic Black Hole Plate with Local Resonators for Broadband Vibration Reduction. Journal of Sound and Vibration, 526, Article ID: 116803. https://doi.org/10.1016/j.jsv.2022.116803 |
| [6] | Deng, J., Guasch, O., Maxit, L., et al. (2023) Sound Radiation and Non-Negative Intensity of a Metaplate Consisting of an Acoustic Black Hole plus Local Resonators. Composite Structures, 304, Article ID: 116423. https://doi.org/10.1016/j.compstruct.2022.116423 |
| [7] | 王小东, 季宏丽, 裘进浩. 声学黑洞原理的双层加筋板-腔系统降噪研究[J]. 振动工程学报, 2022, 35(2): 503-513. |
| [8] | 赵楠, 王禹, 陈林, 等. 分布式声学黑洞浮筏系统隔振性能研究[J]. 振动与冲击, 2022, 41(13): 75-80. |
| [9] | Li, H.Q., Touze, C., Pelat, A., et al. (2021) Combining Nonlinear Vibration Absorbers and the Acoustic Black Hole for Passive Broadband Flexural Vibration Mitigation. International Journal of Non-Linear Mechanics, 129, Article ID: 103558. https://doi.org/10.1016/j.ijnonlinmec.2020.103558 |
| [10] | Li, H.Q., Secail-Geraud, M., Pelat, A., et al. (2021) Experimental Evidence of Energy Transfer and Vibration Mitigation in a Vibro-Impact Acoustic Black Hole. Applied Acoustic, 182, Article ID: 108168. https://doi.org/10.1016/j.apacoust.2021.108168 |
| [11] | 贾秀娴, 杜宇, 于野, 等. 声黑洞理论应用于板类结构的轻量化减震分析[J]. 振动工程学报, 2018, 31(3): 434-440. |
| [12] | Jia, X.X., Du, Y., Yu, Y., et al. (2019) Vibration Characteristics of Plate Structures Embedded with Acoustic Black Holes and Distributed Dynamic Vibration Absorbers. International Journal of Acoustics and Vibration, 24, 531-539. https://doi.org/10.20855/ijav.2019.24.31374 |
| [13] | 曲俊龙, 史文库, 玄圣夷, 等. 面向汽车传动系统多档共振的多级吸振器参数设计方法[J/OL]. 吉林大学学报(工学版): 1-11. https://doi.org/10.13229/j.cnki.jdxbgxb.20230347, 2024-06-13. |
| [14] | 胡小刚, 郑永, 谢绍详, 等. 橡胶动力吸振器在艉轴上的应用[J]. 计算机辅助工程, 2023, 32(4): 34-39, 75. |
