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- Title
Finite element and molecular dynamics models for predicting effective mechanical behaviors of carbon nanotube bundles.
- Authors
Jiang, Wu-Gui; Yao, Jia-Lin; Peng, Shao-Ming; Zhao, Hong-Ping
- Abstract
As an important type of potential interconnection nanostructures, metallic carbon nanotube bundles (CNBs) are expected to replace the copper interconnect lines as interconnects in the microelectronic packaging. By embedding discontinuous CNBs in a soft matrix for considering the intertube Van der Waals interaction, a finite element (FE) model is proposed to estimate the effective mechanical properties of CNBs. We also propose a molecular dynamics (MD) model to predict the intertube spacing and elastic parameters of both the carbon nanotubes and soft matrix by combining the analytical equations. The present FE numerical results show a good agreement with the analytical and MD results. Compared to the micromechanics-based analytical model, the proposed FE model can give a more exact description for the CNBs with a finite size while offering tremendous improvements in computational cost. The influences of the number of the tubes, the radius of the individual tube, and the length of the CNBs on the effective elastic properties, are especially examined. It is found that the geometric factors play an important role in characterizing the effective elastic properties.
- Subjects
FINITE element method; MOLECULAR dynamics; MECHANICAL behavior of materials; CARBON nanotubes; ELASTICITY; VAN der Waals forces
- Publication
Acta Mechanica, 2014, Vol 225, Issue 12, p3549
- ISSN
0001-5970
- Publication type
Article
- DOI
10.1007/s00707-014-1159-4