Sound Absorption Analysis of Micro Perforated Panel with Ladder Change Type Cross Section

Zhi Hui Ma; Xian Hui Li; Xiao Ling Gai; Jun Juan Zhao; Bin Zhang

doi:10.4028/www.scientific.net/AMR.1101.379

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1101Sound Absorption Analysis of Micro Perforated...

Sound Absorption Analysis of Micro Perforated Panel with Ladder Change Type Cross Section

Abstract:

A kind of variable cross section micro perforated panel (MPP) with ladder micro porous is introduced in this paper. Based on the double layers MPP theory and neglected the effect of cavity between two layers of MPP, sound absorption model of MPP with ladder micro porous is established. Numerical simulations are carried out to predict the sound absorption of MPP with ladder micro porous. The predicted results show good agreement with measurements. Through analyzing the weight to the sound-absorbing of orifice size, this study also points out that the smaller orifices play the major role in the sound absorption.

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Periodical:

Advanced Materials Research (Volume 1101)

Pages:

379-384

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1101.379

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Online since:

April 2015

Authors:

Zhi Hui Ma*, Xian Hui Li, Xiao Ling Gai, Jun Juan Zhao, Bin Zhang

Keywords:

Micro Perforated Panel with Ladder Micro Porous, Micro Porous, Sound Absorption Coefficient

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