Elastic properties of nanocomposite materials: influence of carbon nanotube imperfections and interface bonding
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The paper at hand investigates degradation of elastic properties of a composite material reinforced by carbon nanotubes. Sources of degradation are waviness of a nanotube, vacancies and 5-7-7-5 defects. The manuscript aims to establish the computational procedure based on the atomistic finite element method for estimation of elastic properties by accounting for these defects. An epoxy nanocomposite with typical properties is selected and carefully analysed. Special attention is devoted to proper simulation of van der Waals forces at the matrix-nanotube interface. A series of numerical experiments with different waviness ratios and type of defects is performed and based on these results interpolation of elastic properties is carried out. It is found that proper modelling of van der Waals interactions and waviness has a profound influence on the mechanical behaviour of the nanocomposite, while the other type of defects are of secondary importance.
KeywordsCarbon nanotubes Nanocomposites Waviness Imperfections
This work has been partially supported by Croatian Science Foundation under the Project No. 6876—Assessment of structural behaviour in limit state operating conditions. This support is gratefully acknowledged.
Conflict of interest
The authors declare that they have no conflict of interest
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