Modeling the effect of uniaxial deformation on electrical conductivity for composite materials with extreme filler segregation

Oleg V. Lebedev, Sergey G. Abaimov, Alexander N. Ozerin

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    In this work, the correlation between electrical conductivity and uniaxial deformation of a material with highly segregated distribution of conductive filler is studied. Multi-walled carbon nanotubes are used as a model filler. A numerical model that can be used to predict changes in conductive microstructure made of multi-walled carbon nanotubes in response to uniaxial deformation of material is proposed. The model takes into account the ability of nanotubes to assume various conformations and orientations during deformation. Numerical simulations are conducted for uniformly distributed multi-walled carbon nanotubes providing confinement of the filler in a two-dimensional film structure with high volume fraction of the filler. The embedded element method to conduct realistic and computationally efficient simulation of multi-walled carbon nanotube behavior during deformation of the composite material is implemented. Finally, the results of numerical simulations of changes in electrical conductivity of composite during deformation are compared with the experimental data to prove the correctness of assumptions used in the model.

    Original languageEnglish
    Pages (from-to)299-309
    Number of pages11
    JournalJournal of Composite Materials
    Volume54
    Issue number3
    DOIs
    Publication statusPublished - 1 Feb 2020

    Keywords

    • deformation
    • electrical conductivity
    • electrical–mechanical correlations
    • finite element analysis
    • multi-walled carbon nanotubes
    • Nanocomposites

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