Influence of MWCNT’s waviness and aggregation factors on wave dispersion response of MWCNT-strengthened nanocomposite curved beam

Abstract

This article focuses on the impact of waviness and aggregation of nanofillers on wave dispersion behavior of the nanocomposite curved beam strengthened with multi-walled carbon nanotubes (MWCNTs). In fact, the aggregation phenomenon is an inevitable subject in the manufacturing process of strengthened nanocomposite materials. Furthermore, in reality, usage of straight nanoreinforcements is almost impossible. So, MWCNTs can be wavy. These noted topics can significantly affect mechanical behavior of reinforced nanocomposite structures. In the current investigation, aggregation and waviness factors are accounted for through a modified Halpin-Tsai micromechanical homogenization model. The relations of kinetic and kinematic of MWCNTs-reinforced nanocomposite curved beam are expressed by employing Euler-Bernoulli beam theory. The governing equations are obtained by using Hamiltonian approach. The obtained equations are solved via an analytical solution to attain the wave dispersion values. The precision of the obtained outcomes is verified by the reported outcomes in the literature. Finally, the impacts of various important parameters such as aggregation and waviness factor, wave number and opening angles are examined.