Micro-perforated panels for noise reduction
Keyword(s):
AbstractSpace limitations in duct applications, new industrial and health safety regulations require new absorber configurations. Micro-perforated panels (MPP) as used in micro-perforated absorbers (MPA) allow new sound absorber concepts in the category of metamaterials. In this contribution we investigate MPA designs for the low and mid-to-high frequency range and apply finite element (FE) simulations to precisely design absorber configurations for applications in room acoustics and axial fans. The investigations show that the MPA’s cavity configuration must be customized for the desired frequency range and has significant influence on fan performance when applied in a duct flow setup.
2019 ◽
Vol 17
(09)
◽
pp. 1950060
Validation of a finite element model for axle box acceleration at squats in the high frequency range
2014 ◽
Vol 141
◽
pp. 84-93
◽
Keyword(s):
Keyword(s):
2019 ◽
Vol 64
(8)
◽
pp. 740-746
◽
Keyword(s):
2007 ◽
Vol 127
(11)
◽
pp. 1955-1956
Keyword(s):
2018 ◽
Vol 97
◽
pp. 523-529
◽
Keyword(s):
1983 ◽
Vol 16
(5)
◽
pp. 390-393
◽