Modeling the interphase layer between CNT and matrix in nanocomposites using nonlinear large deformation hierarchical multiscale

Ghanbari, J ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. Publisher: Department of Scientific Computing, Florida State University , 2008
  3. Abstract:
  4. We have used a hierarchical multiscale modeling scheme for the analysis of carbon nanotube reinforced nanocomposites. This scheme consists of definition of two boundary value problems, one for macroscale (the scale in which the material exists homogeneously and we are interested in modeling the material behavior on that scale), and another for microscale (the scale in which the material becomes heterogeneous and microstructural constituents emerge). The coupling between these scales is done by using homogenization techniques. Using the presented scheme, we have studied carbon nanotube (CNT) reinforced composites behavior and the effects of an interphase layer between CNT and matrix material. Several nanocomposites with different CNT volume fractions are analyzed and the effects of CNT volume fraction on the global behavior of nanocomposites are studied. For interphase layer, two parameters, namely the thickness and elastic modulus, are optimized so that the effective elastic properties of the nanocompiste match the results obtained using more detailed molecular dynamics studies. © MMM 2008. All rights reserved
  5. Keywords:
  6. Boundary value problems ; Homogenization method ; Molecular dynamics ; Nanocomposites ; Reinforcement ; Volume fraction ; Yarn ; Effective elastic property ; Hierarchical multi-scale modeling ; Homogenization techniques ; Material behavior ; Nonlinear large deformations ; Reinforced composites ; Reinforced nanocomposite ; Two boundary value problems ; Carbon nanotubes
  7. Source: 4th International Conference on Multiscale Materials Modeling, MMM 2008, 27 October 2008 through 31 October 2008 ; 2008 , Pages 239-242 ; 9780615247816 (ISBN)