miun.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
Role of microstructures in the compression response of three-dimensional foam-formed wood fiber networks
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences. (Complex Materials)ORCID iD: 0000-0003-3977-1892
Division of Solid Mechanics, Department of Management and Engineering, Linköping University, Linköping, Sweden.ORCID iD: 0000-0002-1503-8293
Department of Solid Mechanics, Royal Institute of Technology (KTH), Stockholm, Sweden.ORCID iD: 0000-0003-3611-2250
2018 (English)In: Soft Matter, ISSN 1744-683X, E-ISSN 1744-6848, Vol. 14, no 44, p. 8945-8955, article id C7SM02561KArticle in journal (Refereed) Published
Abstract [en]

High-porosity, three-dimensional wood fiber networks made by foam forming present experimentally accessible instances of hierarchically structured, athermal fiber networks. We investigate the large deformation compression behavior of these networks using fiber-resolved finite element analyses to elucidate the role of microstructures in the mechanical response to compression. Three-dimensional network structures are acquired using micro-computed tomography and subsequent skeletonization into a Euclidean graph representation. By using a fitting procedure to the geometrical graph data, we are able to identify nine independent statistical parameters needed for the regeneration of artificial networks with the observed statistics. The compression response of these artificially generated networks and the physical network is then investigated using implicit finite element analysis. A direct comparison of the simulation results from the reconstructed and artificial network reveals remarkable differences already in the elastic region. These can neither be fully explained by density scaling, the size effect nor the boundary conditions. The only factor which provides the consistent explanation of the observed difference is the density and fiber orientation nonuniformities; these contribute to strain-localization so that the network becomes more compliant than expected for statistically uniform microstructures. We also demonstrate that the experimentally manifested strain-stiffening of such networks is due to development of new inter-fiber contacts during compression.

Place, publisher, year, edition, pages
2018. Vol. 14, no 44, p. 8945-8955, article id C7SM02561K
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:miun:diva-34885DOI: 10.1039/C7SM02561KISI: 000450442300008PubMedID: 30398491Scopus ID: 2-s2.0-85056540966OAI: oai:DiVA.org:miun-34885DiVA, id: diva2:1263280
Available from: 2018-11-14 Created: 2018-11-14 Last updated: 2018-12-11Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Authority records BETA

Alimadadi, Majid

Search in DiVA

By author/editor
Alimadadi, MajidLindström, Stefan B.Kulachenko, Artem
By organisation
Department of Natural Sciences
In the same journal
Soft Matter
Paper, Pulp and Fiber Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 422 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