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Network Modeling of Paper Materials: a Micromechanical Model to Investigate the Influence of Fiber Properties
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).
2010 (English)Report (Other academic)
Abstract [en]

A periodic micromechanical modeling concept that utilizes continuum elements and a representative volume element (RVE) loaded with periodic boundary conditions is proposed to study paper network properties. The RVE has a volume of 1 mm3 and consists of fibers that are perfectly bonded. The fiber properties are represented by an isotropic elastic-plastic model that has an additional hardening effect at large strains, which has been observed for single fibers with high fibril angle. As non-linearities are accounted for in the material model, a fairly small number of elements are needed in the RVE to enable predictions of anisotropic fiber network properties, in this work 10×10 10 elements were used. The model has been used to simulate uniaxial tension tests in the three principal directions (MD, CD and ZD). An anisotropic fiber network structure was generated. With this structure, different deformation mechanisms were activated during loading in the different directions.

Place, publisher, year, edition, pages
Stockholm: KTH , 2010. , 16 p.
Series
Trita-HFL, ISSN 1104-6813 ; 0493
Identifiers
URN: urn:nbn:se:kth:diva-24653OAI: oai:DiVA.org:kth-24653DiVA: diva2:352494
Note
QC 20100921Available from: 2010-09-21 Created: 2010-09-21 Last updated: 2010-09-21Bibliographically approved
In thesis
1. On mechanical modeling of composite materials
Open this publication in new window or tab >>On mechanical modeling of composite materials
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH, 2010. 19 p.
Series
Trita-HFL. Report / Royal Institute of Technology, Solid mechanics, ISSN 1654-1472 ; 0494
Identifiers
urn:nbn:se:kth:diva-24644 (URN)
Public defence
2010-10-01, Sal E3, Osquars backe 14, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20100921

Available from: 2010-09-21 Created: 2010-09-20 Last updated: 2013-01-14Bibliographically approved

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Nygårds, MikaelBonnaud, Etienne L.
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CiteExportLink to record
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Citation style
  • apa
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  • Other locale
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Output format
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