Vibro-Acoustic Analysis of Rectangular Plate-Cavity Parallelepiped Coupling System Embedded with 2D Acoustic Black Holes
Source abstract
Abstract
An acoustic black hole (ABH) has the ability to concentrate and manipulate flexural waves, which can be used for structural vibration suppression and noise attenuation. In this paper, a 2D ABH rectangular plate is designed and a 2D ABH plate-cavity coupling system is constructed using the 2D ABH plate and five rectangular elastic plates of uniform thickness. Series of vibro-acoustic FEM models of the plate-cavity parallelepiped coupling system embedded with 2D ABHs are established, and the vibro-acoustic coupling simulation is conducted to analyze the effects of ABHs on the coupling modes, vibro-acoustic coupling characteristics, and mechanism of ABHs and the damping layer. It is shown that at most frequencies in the range of 3600~5000 Hz, the damping 2D ABH plate-cavity parallelepiped coupling system can significantly suppress the sound pressure and greatly reduce the peak values. It is also found that the significant reduction of the participation factor of the acoustic modes within the 100th order is the main mechanism for the obvious suppression of the sound pressure in the damping ABH plate-cavity coupling system at 3701 Hz. Finally, an experimental platform of vibro-acoustic measurement of the 2D ABH coupling system is constructed, and the accuracy of the vibro-acoustic FEM models of the 2D ABH coupling systems established in this paper and the numerical simulation calculation are verified by the vibro-acoustic measurement experiment.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Vibration and Dynamic Analysis · Fluid Dynamics and Vibration Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering, Nanjing Institute of Technology, Nanjing 211167, China
School of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
School of Mechanical Engineering, Southeast University, Nanjing 211189, China
School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China
Funding
National Key Research and Development Program of China · Scientific Research Foundation for High-level Talents of Nanjing Institute of Technology
References (35)
Show source-provided references
1. Frequency attenuation band with low vibration transmission in a finite-size plate strip embedded with 2D acoustic black holes10.1016/j.ymssp.2021.108149 ↗
2. Elastic wave modulation of double-leaf ABH beam embedded mass oscillator10.1016/j.apacoust.2020.107694 ↗
3. The acoustic black hole: A review of theory and applications10.1016/j.jsv.2020.115316 ↗
4. Damping of flexural vibrations in turbofan blades using the acoustic black hole effect10.1016/j.apacoust.2013.09.009 ↗
5. Broadband noise reduction inside helicopter cockpit with acoustic black hole effect
6. Dynamic Property Investigation of Sandwich Acoustic Black Hole Beam with Clamped-Free Boundary Condition10.1155/2019/6708138 ↗
7. Overview of localised flexural waves in wedges of power-law profile and comments on their relationship with the acoustic black hole effect10.1016/j.jsv.2019.115100 ↗
8. Conditions for validity of the geometrical-acoustics approximation in application to waves in an acute-angle solid wedge
9. Acoustic ‘black holes’ for flexural waves as effective vibration dampers10.1016/j.jsv.2003.05.010 ↗
10. Experimental investigation of the acoustic black hole effect for flexural waves in tapered plates10.1016/j.jsv.2006.07.035 ↗
11. Low-frequency elastic wave attenuation in a composite acoustic black hole beam10.1016/j.apacoust.2019.04.029 ↗
12. Characterization of acoustic black hole effect using a one-dimensional fully-coupled and wavelet-decomposed semi-analytical model10.1016/j.jsv.2016.03.031 ↗
13. Dynamic property investigation of segmented acoustic black hole beam with different power-law thicknesses10.1088/1361-665X/abed32 ↗
14. Acoustic Black Holes in Structural Design for Vibration and Noise Control10.3390/acoustics1010014 ↗
15. Bowyer, E.P., and Krylov, V.V. (2015, January 9–12). A review of experimental investigations into the acoustic black hole effect and its applications for reduction of flexural vibrations and structure-borne sound. Proceedings of the 44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE, San Francisco, CA, USA.
16. An experimental investigation of acoustic black hole dynamics at low, mid, and high frequencies10.1115/1.4033894 ↗
17. Transmission loss of plates with embedded acoustic black holes10.1121/1.5001503 ↗
18. Wavenumber transform analysis for acoustic black hole design10.1121/1.4959023 ↗
19. Sound radiation and transonic boundaries of a plate with an acoustic black hole10.1121/1.5081680 ↗
20. Topological optimization of damping layout for minimized sound radiation of an acoustic black hole plate10.1016/j.jsv.2019.06.036 ↗
21. Sound radiation of a beam with a wedge-shaped edge embedding acoustic black hole feature10.1016/j.jsv.2018.10.009 ↗
22. Noise reduction inside a cavity coupled to a flexible plate with embedded 2-D acoustic black holes10.1016/j.jsv.2019.05.004 ↗
23. Wavenumber domain analyses of vibro-acoustic decoupling and noise attenuation in a plate-cavity system enclosed by an acoustic black hole plate10.1121/1.5114821 ↗
24. Transmission loss of plates with multiple embedded acoustic black holes using statistical modal energy distribution analysis10.1016/j.ymssp.2020.107262 ↗
25. Annular acoustic black holes to reduce sound radiation from cylindrical shells10.1016/j.ymssp.2021.107722 ↗
26. Impaired sound radiation in plates with periodic tunneled Acoustic Black Holes10.1016/j.ymssp.2019.106410 ↗
27. Numerical analysis of the vibroacoustic properties of plates with embedded grids of acoustic black holes10.1121/1.4904501 ↗
28. Du, X., Huang, D., Fu, Q., and Zhang, J. (2019). Effects of acoustic black hole parameters and damping layer on sound insulation performance of abh circular plate. Appl. Sci., 9.10.3390/app9245366 ↗
29. Vibro-acoustic analysis of the thin laminated rectangular plate-cavity coupling system10.1016/j.compstruct.2018.01.099 ↗
30. Modelling and analysis of global vibroacoustic coupling characteristics of a rectangular enclosure bounded by a flexible panel10.1155/2018/7562630 ↗
31. The effect of fluid–structural coupling on sound waves in an enclosure—theoretical part10.1121/1.398939 ↗
32. Vibro-acoustic analysis of a rectangular cavity bounded by a flexible panel with elastically restrained edges10.1121/1.3693652 ↗
33. Nonlinear response of a weakly damaged metal sample: A dissipative modulation mechanism of vibro-acoustic interaction10.1177/107754630000600601 ↗
34. Vibro-acoustic analysis of a rectangular-like cavity with a tilted wall10.1016/j.apacoust.2006.04.005 ↗
35. Du, X., Fu, Q., Zhang, J., and Zong, C. (2021). Numerical and Experimental Study on Suppression Effect of Acoustic Black Hole on Vibration Transmission of Refrigerator Compressor. Appl. Sci., 11.10.3390/app11188622 ↗