Dynamical analysis of carbon nanotubes conveying water considering carbon-water bond

In this research, free vibration analysis of Single Walled Carbon Nanotubes (SWCNTs) conveying water is studied. In the present article, the effects of water flow velocity and stiffness of elastic foundation on natural frequencies are studied. The difference between present work and previous works done by others is consideration of carbon-water bond potential energy to model the interaction between them. In spite of theprevious works, in this work, water is considered as a discrete medium. Consequently, new interesting results are achieved which indicate that being continuum assumption for water media leads in different results. For example, If we calculate water density using this method it deviates from 1000 Kg /m3 which is water density when we assume water media as a continuum. Results show that fundamental frequency decreases byincreasing the water flow velocity and decreasing the stiffness of the elastic foundation.

Keywords:

Carbon nanotube , Finite element method , Fluid-structure interaction , Vibration