Numerical and Experimental Study on Suppression Effect of Acoustic Black Hole on Vibration Transmission of Refrigerator Compressor

Du, Xiaofei; Fu, Qidi; Zhang, Jianrun; Zong, Chaoyong

doi:10.3390/app11188622

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…The ABH p has a length of 450 mm, a width of 300 mm, and a uniform thickness area thickness mm. For the ABH with the centre of O2 in Figure 2, its thickness equatio The speed of propagation of the flexural wave in an isotropic thin plate is as follows [35]:…”

Section: Design Of the Acoustic Black Hole Platementioning

confidence: 99%

Vibro-Acoustic Analysis of Rectangular Plate-Cavity Parallelepiped Coupling System Embedded with 2D Acoustic Black Holes

Liao

et al. 2022

Applied Sciences

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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.

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Section: Design Of the Acoustic Black Hole Platementioning

confidence: 99%

Vibro-Acoustic Analysis of Rectangular Plate-Cavity Parallelepiped Coupling System Embedded with 2D Acoustic Black Holes

Liao

et al. 2022

Applied Sciences

Self Cite

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“…In addition, the characteristic that acoustic black holes can gather energy is also applicable to vibration suppression. Du et al [15] proposed a new solution to embed 2D ABHs on the support plate to suppress the transmission of compressor vibration to the refrigerator body. Liang et al [16] focus on the mid-and low-frequency performance of plates embedded with the array of an ABH for energy focalization and vibration and noise suppression.…”

Section: Introductionmentioning

confidence: 99%

Vibration Energy Harvester Based on Bilateral Periodic One-Dimensional Acoustic Black Hole

et al. 2023

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An acoustic black hole (ABH) has been applied in the regulation of structural performance to form the aggregation effect of elastic waves in the local area of the structure, which has been used in energy harvesting in recent years. The piezoelectric vibration energy harvester (VEH) integrated with the beam of a bilateral periodic 1D ABH is proposed in this study. The theoretical model of the proposed VEH is established and analyzed based on the transfer matrix method. The performance of the VEHs is numerically simulated by COMSOL Multiphysics. The simulation results show that the performance of the bilateral ABH beam is higher than its traditional counterpart. Finally, the performance of the proposed VEH is validated in an experimental system. The experimental results show that the peak output voltage of the VEH Model 3 can reach 169.16 V, which is 1.9 times that of the traditional one. In the optimal impedance matching, the output power of the third bilateral VEH is 2.7 times that of the traditional ABH, which can reach 91.52 mW.

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“…In our previous research, the vibration suppression effect of the acoustic black hole on the refrigerator rectangular support plate has been analyzed [7]. On this basis, the effects of different acoustic black hole parameters and damping layer parameters on the vibration reduction effect of the rectangular support plate of the refrigerator were further analyzed in this paper.…”

Section: Introductionmentioning

confidence: 99%

Effect of acoustic black hole parameters on vibration suppression of rectangular plate

Du¹,

Gu²

2022

Vib. proced.

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The acoustic black hole has the ability to gather and manipulate the flexural wave in the structure, and can be used to achieve vibration suppression of the structure. A group of FEM models for the vibration analysis of the rectangular plate embedded with acoustic black holes were established in this paper. Four monitoring points on the ABH plate were selected to calculate their vibration velocity response in 100 Hz-3 kHz frequency interval. In order to study the effects of acoustic black hole geometric parameters and damping layer geometric parameters on the vibration response of the ABH plate, 15 combinations of different parameters of the maximum ABH diameter, the truncated thickness of the ABH, the power index of the ABH, and the damping layer thickness, the maximum diameter of the damping layer were selected to calculate the vibration velocity response of the four monitoring points. The calculation result can help us understand the effects of acoustic black hole geometric parameters and damping layer geometric parameters on the vibration suppression of rectangular plate.

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Numerical and Experimental Study on Suppression Effect of Acoustic Black Hole on Vibration Transmission of Refrigerator Compressor

Cited by 5 publications

References 29 publications

Vibro-Acoustic Analysis of Rectangular Plate-Cavity Parallelepiped Coupling System Embedded with 2D Acoustic Black Holes

Vibro-Acoustic Analysis of Rectangular Plate-Cavity Parallelepiped Coupling System Embedded with 2D Acoustic Black Holes

Vibration Energy Harvester Based on Bilateral Periodic One-Dimensional Acoustic Black Hole

Effect of acoustic black hole parameters on vibration suppression of rectangular plate

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