Dynamic Response of FG-BNNT Reinforced Composite Plate Subjected to Low Velocity Impact Loading

Abstract

In the world of emerging materials, composites play a major role due to their lightweight and high strength-to-thickness ratio. There are many classes of composites such as Metal matrix composites, Ceramic matrix composites and Polymer matrix composites based on the matrix. And short fibre composites, long-fibre composites and particulate composites based on the reinforcement. The materials used as matrix and reinforcement play a major role in defining the strength and properties of a composite. Of all the different composites available in today’s life, Nanocomposite has become the centre of interest because it exhibits high strength with a small amount of reinforcement. The reinforcement in the nanocomposites can be of different types. They can be arranged in the form of nanotubes, nanoparticles, nanosheets etc. In this research, we focus on the polymer matrix nanocomposite taking reinforcement as the nanotubes. The mechanical properties of the nanocomposite are evaluated using the Halpin-Tsai micromechanical model and the analytical investigation is carried out using the new simple higher-order shear deformation theory and the contact force is calculated using the Hertz contact law and New mark’s technique is used for numerical investigation. The dynamic response of the FG-reinforced nanocomposite is studied and the best nanocomposite from the two different matrices and fibres is discussed. The influence of fibre volume fraction, Fibre orientation and the Fibre arrangement on the dynamic response is also presented and discussed and the comparison of CNT and BNNT with epoxy as matrix is presented and the comparison of Epoxy and HDPE with BNNT as reinforcement is also studied.