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3D tunable anisotropic metamaterial for low-frequency vibration absorption
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Fluid Mechanics and Engineering Acoustics, Marcus Wallenberg Laboratory MWL. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design.ORCID iD: 0000-0001-9980-0144
KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design. KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Fluid Mechanics and Engineering Acoustics, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0002-6555-531X
KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design. KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Fluid Mechanics and Engineering Acoustics, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0003-1855-5437
2021 (English)In: Proceeding of Resource Efficient Vehicles 2021, 2021Conference paper, Published paper (Other academic)
Abstract [en]

In the well-known conflict between design space and performance requirements e.g. in termsof noise and vibration insulation, the emergence of new materials exhibiting exceptional insula-tion properties for a reduced weight or volume increase has received much attention in the lastdecade. Metamaterials with artificially designed architectures are increasingly considered as newfunctional materials with unusual properties. This paper presents a group of novel 3D latticemetamaterials for low-frequency vibration absorption. The novel lightweight cellular microstruc-tures for vibro-acoustic metamaterials are designed by modification of the Kelvin cell. Interestinganisotropic material properties are generated by controlling the geometries, e.g., high-stiffness,auxetic, and strong compression-torsional coupling properties. The interesting meta-propertiesenable to tune the cellular resonators of the structures at a low-frequency range. Previous researchis mostly focused on metamaterials for vibration absorption along only one or two directions. Inthis paper, wide-band high sound absorption properties of energy transfer coupling in all threedirections are achieved by tunning the frequency-dependent meta-structures in controlling the ge-ometry and material properties. Additive manufacturing technologies are used for making the 3Dcomplex tunable metamaterials.

Place, publisher, year, edition, pages
2021.
National Category
Applied Mechanics Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-309384OAI: oai:DiVA.org:kth-309384DiVA, id: diva2:1641412
Conference
Resource Efficient Vehicles Conference 14 – 16 June 2021
Funder
Vinnova, 2016-05195),
Note

QC 20220309

Available from: 2022-03-01 Created: 2022-03-01 Last updated: 2022-06-25

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Mao, HuinaRumpler, RomainGöransson, Peter

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CiteExportLink to record
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