Performance Research and Optimization of Sound Insulation Hood of Air Compressor Unit

Wu, Haowei; Shen, Yuqi; Liang, Mengtao; Liu, Jiankang; Wu, J; Li, Zhuo

doi:10.3390/app112110364

Cited by 4 publications

(7 citation statements)

References 13 publications

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Section: Resultsmentioning

confidence: 99%

“…Firstly, the acoustic finite element simulation had been proven to be a reliable and effective method to investigate the sound-absorption performance and sound-insulation properties of acoustic metamaterials in many studies [ 47 , 48 , 49 , 50 , 51 ]. It can be judged from these studies [ 47 , 48 , 49 , 50 , 51 ] that the simulation results have been consistent with the experimental data when selecting the appropriate parameters in the simulation model. Qu et al [ 48 ] investigated the normal incidence of sound-transmission loss with lightweight composite partitions using finite element simulations as well as experiments conducted in a standing wave tube, and it was proven that the simulation and experimental results were closely aligned.…”

Section: Resultsmentioning

confidence: 99%

“…Qu et al [ 48 ] investigated the normal incidence of sound-transmission loss with lightweight composite partitions using finite element simulations as well as experiments conducted in a standing wave tube, and it was proven that the simulation and experimental results were closely aligned. Acoustic finite element numerical simulation analysis of the sound-insulation-hood model was carried out by Wu et al [ 49 ] using the acoustic software LMS Virtual Lab Acoustics v13.3, in which the simulation results were compared with experimental data to verify the correctness of the model, and the theoretical results showed a good agreement with experiment data. By combining the finite element model simulation and an impedance tube test, the effectiveness of membrane-type acoustic metamaterials with petal-like rings and the correctness of the numerical simulation were validated by Huang et al [ 51 ].…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Study on Sound-Insulation Performance of an Acoustic Metamaterial of Air-Permeable Multiple-Parallel-Connection Folding Chambers by Acoustic Finite Element Simulation

Peng

Shen

et al. 2023

Materials

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In order to achieve a balance between sound insulation and ventilation, a novel acoustic metamaterial of air-permeable multiple-parallel-connection folding chambers was proposed in this study that was based on Fano-like interference, and its sound-insulation performance was investigated through acoustic finite element simulation. Each layer of the multiple-parallel-connection folding chambers consisted of a square front panel with many apertures and a corresponding chamber with many cavities, which were able to extend both in the thickness direction and in the plane direction. Parametric analysis was conducted for the number of layers nl and turns nt, the thickness of each layer L2, the inner side lengths of the helical chamber a1, and the interval s among the various cavities. With the parameters of nl = 10, nt = 1, L2 = 10 mm, a1 = 28 mm, and s = 1 mm, there were 21 sound-transmission-loss peaks in the frequency range 200–1600 Hz, and the sound-transmission loss reached 26.05 dB, 26.85 dB, 27.03 dB, and 33.6 dB at the low frequencies 468 Hz, 525 Hz, 560 Hz, and 580 Hz, respectively. Meanwhile, the corresponding open area for air passage reached 55.18%, which yielded a capacity for both efficient ventilation and high selective-sound-insulation performance.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Study on Sound-Insulation Performance of an Acoustic Metamaterial of Air-Permeable Multiple-Parallel-Connection Folding Chambers by Acoustic Finite Element Simulation

Peng

Shen

et al. 2023

Materials

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“…In order to improve the research efficiency and reduce the experiment cost, the acoustic finite element simulation has been widely utilized in the field of sound insulation and noise reduction [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. Okuzono et al [ 30 ] applied the finite element method using hexahedral 27-node spline acoustic elements with low numerical dispersion for the room acoustics simulation in both the frequency and time domains.…”

Section: Introductionmentioning

confidence: 99%

“…Lin et al [ 38 ] used the finite element simulation method and the experiment testing to validate the sound insulation performances of a novel sandwich structure compounded with a resonant acoustic metamaterial. Acoustic finite element numerical simulation analysis of the sound insulation hood model was carried out using the acoustic software LMS Virtual Lab Acoustics by Wu et al [ 39 ], and the simulation result was verified by the experimental validation. It has been proved by these literatures [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ] that the acoustic finite element simulation is an effective and helpful method to analyze the sound characteristics of materials or structures through selecting the suitable mesh type and appropriate element parameters, which is propitious for improving research efficiency and reducing the experimental steps and costs.…”

Section: Introductionmentioning

confidence: 99%

Research on the Sound Insulation Performance of Composite Rubber Reinforced with Hollow Glass Microsphere Based on Acoustic Finite Element Simulation

Yang

Tang²,

Shen

et al. 2023

Polymers

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The composite rubber reinforced with hollow glass microsphere (HGM) was a promising composite material for noise reduction, and its sound insulation mechanism was studied based on an acoustic finite element simulation to gain the appropriate parameter with certain constraint conditions. The built simulation model included the air domain, polymer domain and inorganic particles domain. The sound insulation mechanism of the composite material was investigated through distributions of the sound pressure and sound pressure level. The influences of the parameters on the sound transmission loss (STL) were researched one by one, such as the densities of the composite rubber and HGM, the acoustic velocities in the polymer and inorganic particle, the frequency of the incident wave, the thickness of the sound insulator, and the diameter, volume ratio and hollow ratio of the HGM. The weighted STL with the 1/3 octave band was treated as the evaluation criterion to compare the sound insulation property with the various parameters. For the limited thicknesses of 1 mm, 2 mm, 3 mm and 4 mm, the corresponding optimal weighted STL of the composite material reached 14.02 dB, 19.88 dB, 22.838 dB and 25.27 dB with the selected parameters, which exhibited an excellent sound insulation performance and could promote the practical applications of the proposed composite rubber reinforced with HGM.

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Study of Sound Perception Evaluation in Refrigeration Gases

et al. 2023

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(1) Background: In the past, sound design was focused on the minimization of the emitted sound, understanding that the lower the sound, the better. Nowadays, this concept is outdated; in addition to the sound pressure level, many more aspects of the sound are considered to fulfil the subjective satisfaction of clients. Thus, a new concept called sound quality has emerged to reach more facets of the sound. In refrigeration systems, the recommendations of European Union are aimed at reducing greenhouse emissions by means of the replacement of the hydrochlorofluorocarbons gases with other less pollutant gases. The refrigeration systems are designed to be used with a specific refrigeration gas, and the noise emitted by these systems is certificated using this refrigeration gas. However, the regularizations have changed, and new refrigerant gases should be used. Considering that these new refrigeration gases work at different pressures, it is possible that the noise could be different with these gases. Moreover, the study of sound quality is very important for the manufacture as the perception and therefore the annoyance could change with the use of new gases. (2) Methods: Two different gases, R-449A and R-134A, have been studied. An acoustic camera has been used to measure and identify the sound quality in the refrigeration systems. (3) Results: The results have shown R-134A has better sound quality than R-449A. (4) Conclusions: This study shows that R-449A and R-134A could be a substitute for R-404A in terms of noise level.

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Performance Research and Optimization of Sound Insulation Hood of Air Compressor Unit

Cited by 4 publications

References 13 publications

Study on Sound-Insulation Performance of an Acoustic Metamaterial of Air-Permeable Multiple-Parallel-Connection Folding Chambers by Acoustic Finite Element Simulation

Study on Sound-Insulation Performance of an Acoustic Metamaterial of Air-Permeable Multiple-Parallel-Connection Folding Chambers by Acoustic Finite Element Simulation

Research on the Sound Insulation Performance of Composite Rubber Reinforced with Hollow Glass Microsphere Based on Acoustic Finite Element Simulation

Study of Sound Perception Evaluation in Refrigeration Gases

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