Comparison of 1D transfer matrix method and finite element method with tests for acoustic performance of multi-chamber perforated resonator

Guo, Rong; Tang, Wenbo; Zhu, Wei

doi:10.1016/j.apacoust.2016.05.018

Cited by 14 publications

(7 citation statements)

References 15 publications

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“…Sahasrabudhe et al 12 used matrix cohesion techniques and transfer matrix techniques to obtain excellent agreement with analytical and experimental results in the form of muffler performance parameters. Guo et al 13 designed the transmission loss of the analog muffler of the transmission loss test equipment based on the double load method. The results showed that the FEM with detailed perforation modeling had a good consistency with the frequency and amplitude test results over the entire frequency range.…”

Section: Introductionmentioning

confidence: 99%

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Muffler structure improvement based on acoustic finite element analysis

Zhang

et al. 2019

Journal of Low Frequency Noise, Vibration and Active Control

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Aiming to obtain the acoustic attenuation performance of exhaust muffler of diesel engine and the influence of main structural parameters on its acoustic attenuation characteristics, the finite element analysis method and acoustic theory were adopted to numerically investigate the acoustic attenuation performance under the boundary condition of acoustic adiabatic propagation and muffler wall. It suggested that the noise cancellation effect of muffler was poor at the middle and low frequency in range of 0-3000 Hz, and the transfer loss of muffler was basically 0 dB pass frequency at 1100 Hz. According to previous single-factor study experience, the structural factors, such as the expansion ratio, insertion length of outlet perforated pipe, the distance between the diaphragm and the front part of muffler, have influences on the acoustic performance of muffler at low frequency. Thus, they were taken as the starting point to study the influence of multiple interaction factors on the muffling performance by using orthogonal design method combined with the finite element analysis method. The influence degree of different structure parameters on the acoustic performance of muffler and the optimized structure parameters were obtained. Through the analysis on the acoustic characteristic of the optimized muffler, it indicated that the transmission loss of the improved muffler had significant increase in other frequency range except the range of 650-800 Hz and 2500-2700 Hz, especially at frequency of 1100 Hz compared with the original muffler. In the range of 0-3000 Hz, the mean of transmission loss of the improved muffler was about 9.8 dB larger than that of original muffler, which indicated that better noise cancellation effect was achieved. The improved muffler also provided a certain reference for the structural improvement of similar muffler.

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Section: Introductionmentioning

confidence: 99%

“…Guo et al. 13 designed the transmission loss of the analog muffler of the transmission loss test equipment based on the double load method. The results showed that the FEM with detailed perforation modeling had a good consistency with the frequency and amplitude test results over the entire frequency range.…”

Section: Introductionmentioning

confidence: 99%

Muffler structure improvement based on acoustic finite element analysis

Zhang

et al. 2019

Journal of Low Frequency Noise, Vibration and Active Control

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“…This can be done through the usage of simulation tools to achieve the optimum design in a lesser amount of time and lower cost [7,8]. Among the commercial tools that are available in current market are AVL Boost, GT-POWER, Ricardo Wave and Lamps which are using 1-D theory for acoustical analysis [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Tuning of acoustic needs several iterations. By using a 1D simulation tool, it reduces product development time and cost [10,14].…”

Section: Introductionmentioning

confidence: 99%

Acoustic Study of an Air Intake System of SI Engine using 1-Dimensional Approach

Dahlan¹,

Said²,

Latiff³

et al. 2019

IJAME

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Air intake system of an internal combustion engine plays main role in delivering fresh air from the environment to the engine and dampening the sound of the engine combustion process coming from the engine combustion process. In this study, a simulation was conducted to improve the existing air intake system design in terms of acoustic study to have better sound quality by modifying the resonators, air duct and airbox volume of the air intake module. This study implements the 1-dimensional simulation study using commercial software, correlate to the 1.6-liter natural aspirated engine. The objective of this study is to decrease the engine noise at snorkel of the air intake module without losing too much of pressure drop. At the end of this study, the analysis defines the geometry of air intake module with the recommended resonator for fabrication and physical testing. The simulation result shows that the modified air intake module meet the objective and fulfil the performance target.

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“…To obtain the transmission loss of the resonator, the transfer matrix method is preferred. 16,17 The method is also designed to calculate natural frequencies and mode shapes of the free vibration for tapered beams. 18 In the current paper, the transfer matrix method is used in calculating pressure pulsations in the reciprocating compressor piping system and evaluating the suppression performance of the ESST.…”

Section: Introductionmentioning

confidence: 99%

Attenuation of pulsations in the reciprocating compressor piping system with an elbow-shaped surge tank

Yang

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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An elbow-shaped surge tank is proposed to suppress the pressure pulsations. The transfer matrix method was developed and the mathematical model was established to predict the distribution of pressure pulsations in the piping system (on which a surge tank was already installed) with an elbow-shaped surge tank. Simulation work of the whole piping system was performed. The results show that the elbow-shaped surge tank has good performance to attenuate the pressure pulsations. The frequency analysis shows that the amplitude for the first pulsation frequency is attenuated to a low level. The impulse response was analyzed to examine the efficiency of suppressing pulsations by using the suppressor. The theoretical analysis showed that there exists the optimal suppression performance when setting the distance between the elbow-shaped surge tank and the existing one. Meanwhile, modifying the ratio of length to diameter with a fixed surge volume could also impact the pressure pulsations. The analysis results can be used as a reference in designing and installing the elbow-shaped surge tank.

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Comparison of 1D transfer matrix method and finite element method with tests for acoustic performance of multi-chamber perforated resonator

Cited by 14 publications

References 15 publications

Muffler structure improvement based on acoustic finite element analysis

Muffler structure improvement based on acoustic finite element analysis

Acoustic Study of an Air Intake System of SI Engine using 1-Dimensional Approach

Attenuation of pulsations in the reciprocating compressor piping system with an elbow-shaped surge tank

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