Effect of neck geometry of resonance cells on noise reduction efficiency in sound-absorbing structures

Pisarev, P. V.; Anoshkin, A. N.; Pan’kov, A. A.

doi:10.1063/1.4964061

Cited by 11 publications

(4 citation statements)

References 1 publication

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“…Поэтому при проектировании ЗПК необходимо правильно подбирать их параметры, а также сочетание конфигураций и форм резонаторов, обеспечивающих наиболее эффективное подавление шума двигателя на заданных частотах [3][4][5][6].…”

Section: пермский национальный исследовательский политехнический унивunclassified

ISSLEDOVANIE AKUSTIChESKOJ JeFFEKTIVNOSTI JaChEEK ZPK KONIChESKOJ FORMY PRI RAZLIChNYH UROVNJaH ZVUKOVOGO DAVLENIJa

Pisarev¹

2019

International Workshop "Multiscale Biomechanics and Tribology of Inorganic and Organic Systems" ; Mezhdunarodnaja Konferencija

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Section: пермский национальный исследовательский политехнический унивunclassified

ISSLEDOVANIE AKUSTIChESKOJ JeFFEKTIVNOSTI JaChEEK ZPK KONIChESKOJ FORMY PRI RAZLIChNYH UROVNJaH ZVUKOVOGO DAVLENIJa

Pisarev¹

2019

International Workshop "Multiscale Biomechanics and Tribology of Inorganic and Organic Systems" ; Mezhdunarodnaja Konferencija

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“…One of the dominant components of the harmful impact of aviation on the environment is the noise on the terrain created by aircraft. One of the most effective ways to reduce the noise of aircraft propulsion systems is to include soundabsorbing structures (SAS) [1,2].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the influence of perforation parameters on the acoustic efficiency of sound-absorbing structures

2018

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Within the framework of this work, calculation and experimental studies of the influence of technological defects on the acoustic efficiency of sound-absorbing structures (SAS) are carried out. In this work, the physical and mathematical models of predicting the effective acoustic properties of cells with different diameter of the throat were formulated. A series of laboratory experiments was performed to evaluate the acoustic efficiency of SAS cells with different diameters, on an interferometer with a normal sound wave drop. Based on the results of the studies, the dependences of the natural frequency of the resonator and the coefficient of acoustic pressure loss depending on the diameter of the perforation were revealed.

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“…The lining of aircraft engine channels by resonant sound-absorbing structures (SAS) is the main way to reduce the noise of an aircraft engine fan. SAS consists of a filler containing cells of various geometric shapes [4][5][6][7][8][9] (Figures 1a-c), as well as closed bottom and top perforated plating.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing sound-absorbing structures by 3d-printing

2018

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In this research we developed the methods and technologies for manufacturing sound-absorbing structures (SAS) samples using Dimension SST 1200 and Envisiontec Perfactory XEDE units. While testing the technique, the shortcomings of both units were identified. To eliminate the identified shortcomings, we formulated some recommendations and adjusted the main stages of manufacturing SAS with the application of these methods. Experimental acoustic studies of the produced reference samples of the SAS on an interferometer with normal incidence of waves were carried out. Acoustic tests of samples of SAS manufactured with consideration of the developed technological solutions showed good sustainability of the obtained results, we revealed strong correlation with the samples from polymer composite materials manufactured using standard plant technologies.

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Effect of neck geometry of resonance cells on noise reduction efficiency in sound-absorbing structures

Cited by 11 publications

References 1 publication

ISSLEDOVANIE AKUSTIChESKOJ JeFFEKTIVNOSTI JaChEEK ZPK KONIChESKOJ FORMY PRI RAZLIChNYH UROVNJaH ZVUKOVOGO DAVLENIJa

ISSLEDOVANIE AKUSTIChESKOJ JeFFEKTIVNOSTI JaChEEK ZPK KONIChESKOJ FORMY PRI RAZLIChNYH UROVNJaH ZVUKOVOGO DAVLENIJa

Investigation of the influence of perforation parameters on the acoustic efficiency of sound-absorbing structures

Manufacturing sound-absorbing structures by 3d-printing

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