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On the balancing of structural and acoustic performance of a sandwich panel based on topology, property, and size optimization
KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.
KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.
KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0003-0198-6660
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0003-1855-5437
2014 (English)In: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 333, no 13, 2677-2698 p.Article in journal (Refereed) Published
Abstract [en]

Balancing structural and acoustic performance of a multi-layered sandwich panel is a formidable undertaking. Frequently the gains achieved in terms of reduced weight, still meeting the structural design requirements, are lost by the changes necessary to regain acceptable acoustic performance. To alleviate this, a design method for a multifunctional load bearing vehicle body panel is proposed which attempts to achieve a balance between structural and acoustic performance. The approach is based on numerical modelling of the structural and acoustic behaviour in a combined topology, size, and property optimization in order to achieve a three dimensional optimal distribution of structural and acoustic foam materials within the bounding surfaces of a sandwich panel. In particular the effects of the coupling between one of the bounding surface face sheets and acoustic foam are examined for its impact on both the structural and acoustic overall performance of the panel. The results suggest a potential in introducing an air gap between the acoustic foam parts and one of the face sheets, provided that the structural design constraints are met without prejudicing the layout of the different foam types.

Place, publisher, year, edition, pages
2014. Vol. 333, no 13, 2677-2698 p.
Keyword [en]
Porous-Media, Frequency Range, Elastic Waves, Propagation, Constraints, Eso
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-145797DOI: 10.1016/j.jsv.2014.01.025ISI: 000335274100002Scopus ID: 2-s2.0-84904113598OAI: oai:DiVA.org:kth-145797DiVA: diva2:720939
Note

QC 20140603

Available from: 2014-06-03 Created: 2014-06-02 Last updated: 2017-12-05Bibliographically approved

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Wennhage, PerGöransson, Peter

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Cameron, Christopher J.Nordgren, Eleonora LindWennhage, PerGöransson, Peter
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VinnExcellence Center for ECO2 Vehicle designAeronautical and Vehicle Engineering
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