kth.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Dynamic behaviour of low- to high-density anisotropic cellular materials
KTH, School of Engineering Sciences (SCI), Engineering Mechanics. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design. (Marcus Wallenberg Lab Sound & Vibrat Res)ORCID iD: 0000-0001-9980-0144
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design. Le Mans Univ, CNRS, Inst Acoust Grad Sch IA GS, Lab Acoust Univ Mans LAUM,UMR 6613, Le Mans, France.. (Marcus Wallenberg Lab Sound & Vibrat Res)ORCID iD: 0000-0001-9071-6325
KTH, School of Engineering Sciences (SCI), Engineering Mechanics. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design. (Marcus Wallenberg Lab Sound & Vibrat Res)ORCID iD: 0000-0001-9948-249X
KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center for ECO2 Vehicle design. KTH, School of Engineering Sciences (SCI), Engineering Mechanics. (Marcus Wallenberg Lab Sound & Vibrat Res)ORCID iD: 0000-0002-6555-531X
Show others and affiliations
2022 (English)In: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 536, article id 117137Article in journal (Refereed) Published
Abstract [en]

The dynamic behaviour of a novel anisotropic cellular micro-structural geometry derived from the basic symmetric Kelvin cell is discussed for varying relative density. The cells are arranged in a cubic array and the dynamic response is studied in a classical seismic mass setup using beam elements to represent the ligaments of the cell. The eigenfrequencies and the eigenmodes of the cellular array are computed together with forced response simulations where a proportional damping model of the Young's modulus for the cell ligaments is assumed. The frequency dependence of the damping is based on a fractional derivative representation. Using a recently developed inversion method, equivalent, homogenised solid material models of the cellular array are discussed with the associated equivalent elastic properties given in terms of the 21 elastic constants of the Hooke's tensor. For the equivalent solid material models, the eigenfrequencies and eigenmodes are computed, and forced response simulations are performed assuming the same type of proportionality in the damping as the cellular array, for the same seismic mass setup. The correlation, between the eigenfrequencies and the eigenmodes, shows an overall interesting agreement between the cellular and the equivalent solid model for the quite complex deformation shapes observed. The forced response results indicate that the equivalent solid modelling accurately represents the global dynamics of the anisotropic cellular array, but needs to be further refined when local shearing deformation within the individual cells starts to be dominating.

Place, publisher, year, edition, pages
Elsevier BV , 2022. Vol. 536, article id 117137
Keywords [en]
Kelvincell, Microstructure, Low-tohigh-density, Anisotropic, Inverseestimation, Auxetic, Viscoelastic, Localshear
National Category
Medical Laboratory and Measurements Technologies
Identifiers
URN: urn:nbn:se:kth:diva-320305DOI: 10.1016/j.jsv.2022.117137ISI: 000861564300004Scopus ID: 2-s2.0-85132929832OAI: oai:DiVA.org:kth-320305DiVA, id: diva2:1705575
Note

QC 20221024

Available from: 2022-10-24 Created: 2022-10-24 Last updated: 2022-10-24Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Mao, HuinaGaborit, MathieuLundberg, EvaRumpler, RomainGöransson, Peter

Search in DiVA

By author/editor
Mao, HuinaGaborit, MathieuLundberg, EvaRumpler, RomainGöransson, Peter
By organisation
Engineering MechanicsVinnExcellence Center for ECO2 Vehicle designVehicle Engineering and Solid MechanicsFluid Mechanics and Engineering Acoustics
In the same journal
Journal of Sound and Vibration
Medical Laboratory and Measurements Technologies

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 141 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf