Predicting and optimising acoustical and vibrational performance of open porous foams
2008 (English)Licentiate thesis, comprehensive summary (Other scientific)
This thesis concerns the modelling of acoustical and vibrational properties of open cell porous foams in multi-layered structures, especially multi-layered panels. The object is to enable optimisation of the microscopic geometry of the foam with respect to macroscopic quantities such as sound pressure level, surface velocity, total mass or cost. The developed method is based on numerical solutions to Biot's equations were scaling laws has been used to connect the microscopic geometry of the foam to macroscopic properties such as density, flow resistivity and characteristic length. Efforts have also been made to establish a scaling law for tortuosity that allows for adaptation to different strut shapes.
Place, publisher, year, edition, pages
Stockholm: KTH , 2008. , 16 p.
Trita-AVE, ISSN 1651-7660 ; 2008:37
porous material, foam, Biot, optimisation, tortuosity, permeability
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-4820ISBN: 978-91-7415-013-1OAI: oai:DiVA.org:kth-4820DiVA: diva2:14135
2008-06-12, Sal D3, KTH, Lindstedtsvägen 5, Stockholm, 14:00
Desmet, Wim, Professor
QC 201011172008-06-112008-06-112010-11-17Bibliographically approved
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