Optimization of multi-size micro-perforated panel absorbers using multi-population genetic algorithm

Qian, Yi; Cui, Kai; Liu, S.M.; Li, Ziyu; Shao, Dinghong; Kong, Detian; Sun, Shaofei

doi:10.3397/1/376204

Cited by 23 publications

(5 citation statements)

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“…An equivalent electro-acoustic circuit method was used to explore the sound absorption properties of a perforated panel with microperforated partitions [8,9]. Qian et al [25] also used an equivalent electroacoustic circuit method to model multi-size microperforations. They proposed a multi-population genetic algorithm to optimize the design of multi-size MPP absorbers.…”

Section: Introductionmentioning

confidence: 99%

Damping performance of finite microperforated plates using multi-size and spatial distributions of perforations

Gallerand,

Legrand,

Dupont

et al. 2024

Applied Acoustics

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Section: Introductionmentioning

confidence: 99%

Damping performance of finite microperforated plates using multi-size and spatial distributions of perforations

Gallerand,

Legrand,

Dupont

et al. 2024

Applied Acoustics

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“…In this way, different configurations of MPP with multi-sized perforation were proposed [5,6]. Electro-acoustic model was used by Qian et al [7]. Experimental investigation on the sound absorption performance of an MPP with multi-sized perforation was also performed by Miasa et al [5].…”

Section: Introductionmentioning

confidence: 99%

Vibration of microperforated plate with spatial distribution of multiple-sized perforations

Gallerand,

Legrand,

Dupont

et al. 2023

inter noise

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Recent works by the authors on homogeneous MPPs have highlighted the structural damping capabilities of MPPs in the low frequency range. The developed theoretical approach was based on the analogy between an MPP and a porous plate. The added damping is due to visco-thermic effects coupled to fluid-structure interactions. The added damping maxes out at a characteristic frequency depending on perforation diameter. In order to reduce plate vibrations, it was advised to match the characteristic frequency to a plate mode. It is proposed here to maximize the added damping effect on several vibration modes by focusing on MPPs with multiple-sized perforations and with spatial distribution of perforations. As an extension of the previous analytical model, an approach based on the electro-acoustic analogy is established to capture the effect of multiple-sized perforations. Moreover, a perforation ratio gradient is included in the approach to model an MPP with inhomogeneous spatial distribution of perforations. Experimental measurements on MPPs validate the proposed analytical model. Results show that: (i) MPP with multiple-sized perforations increases the frequency band of the effective damping; (ii) the added damping increases when the perforations are distributed around the antinodes of the considered mode, (iii) the two effects can be combined.

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“…The analysis and optimization of the MPP parameters to enhance the absorption performance have been presented (Qian et al, 2014b;Yu et al, 2016); however, most of these processes are consumed time with convoluted processing steps, especially models of a large structure (Hussein, 2020;El-Basheer et al, 2017). Generally, it should be considered that the potential interactions between model variables could cause incorrect optimum parameters as any modifying parameter at a time.…”

Section: Introductionmentioning

confidence: 99%

An Empirical Model for Optimizing the Sound Absorption of Single Layer MPP Based on Response Surface Methodology

Esraa¹,

putra²,

Mosa³

et al. 2022

IJTech

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Micro-perforated panel (MPP) is a thin panel absorber capable of absorbing sound energy at a targeted frequency range by adjusting the MPP parameters. An analytical model is available, but it is not a direct, convenient method for practitioners to determine the required MPP parameters. This paper presents an optimized empirical model to calculate the sound absorption coefficient of a single-layer MPP. The response surface methodology is employed for a simple case to generate a second-order polynomial model through a sequence of designing processes to analyze the functional relationships and variation of the outcome performance (sound absorption coefficient) concerning the MPP parameters, namely the panel thickness, hole diameter, perforation ratio, and the depth of the back air layer. The analysis is carried out for frequencies between 300 to 900 Hz. The predicted data (empirical) is compared with the actual data (analytical), leading to a coefficient of variation of 0.145%. The proposed empirical model can be used as a method to select the suitable MPP parameters according to the targeted frequency bandwidth of absorption with less computational time.

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Optimization of multi-size micro-perforated panel absorbers using multi-population genetic algorithm

Cited by 23 publications

References 0 publications

Damping performance of finite microperforated plates using multi-size and spatial distributions of perforations

Damping performance of finite microperforated plates using multi-size and spatial distributions of perforations

Vibration of microperforated plate with spatial distribution of multiple-sized perforations

An Empirical Model for Optimizing the Sound Absorption of Single Layer MPP Based on Response Surface Methodology

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