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Finite element modeling of multi-walled carbon nanotubes under axial tension

Mohammadpour, E. and Awang, M. (2012) Finite element modeling of multi-walled carbon nanotubes under axial tension. In: 2012 International Conference on Enabling Science and Nanotechnology (ESciNano), 5 - 7 January 2012, Johor Bahru, Malaysia

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An effective finite element (FE) approach for modeling the structure and the deformation of multi-walled carbon nanotubes (MWCNTs) is presented. Individual tube was modeled using frame like structure with beam elements. The effect of van der Waals forces, crucial in MWCNT, was modeled by spring elements (fig. 1). The success of this new carbon nanotube (CNT) modeling approach was verified by comparing the simulation results for single and multi-walled nanotubes with other experimental and computational results available in the literature [1, 2]. Simulations of final deformed configurations were in excellent agreement with the atomistic models for various deformations. The proposed approach successfully predicts the experimentally observed values for mechanical behavior of MWCNTs (Table 1). The results demonstrated that the proposed FE technique could provide a valuable tool for studying the mechanical behavior of different type of nanotubes, as well as their effectiveness as load-bearing entities in nanocomposite materials.

Item Type: Conference Paper
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