Analysis of Sandwich Composite Subjected to Impact Loading for Enhanced Energy Absorption

Abstract Composite materials are engineered to achieve the balance of properties for a wide spectrum of applications. In the current work, PU foam is used as a core, and Epoxy E-Glass (UD) is used as a face sheet. Impact of sandwich composite with single core and double core are considered. The effect of energy absorption, contact force, residual velocity, and deformation on impact velocity are discussed. The phenomenon of perforation, penetration and rebounding was observed in 150 m/s, 130 m/s and 100 m/s respectively. The FE tool ANSYS is used for analysis. It was found double core sandwich composite absorbs more energy and even stiffer than single core sandwich composite.