Investigation of Bending Behavior of (Carbon/Epoxy) Composite Material in FEA

Abstract

The fiber-reinforced composite made with carbon/epoxy is having huge applications like aerospace industry, chemical industry. This is because composite materials are corrosion resistant, capable of high temperature performance and can be used for metal replacement. Carbon fiber prepregs enable lightweight and stiffness in applications ranging from oil and gas to recreational products. These composites are generally made with lamina having number of layers these laminas are also knowns as ply. The mechanical properties of composite are depending upon the ply angles and volume fraction. In this work an attempt is made to vary the volume fraction of carbon/epoxy composites and determination of buckling behaviour of composite due to change in volume fraction of the composite material. In the case of composite plate made up with carbon/epoxy, we compute buckling load on the plate and its effect on change in volume fraction of composite plate. Similarly, a composite cylinder is subjected to buckling analysis, the effect of various boundary conditions on buckling load is examined. Further, behaviour of composite plate, when subjected to impact load and evolution of damage is accordance with Hashins damage criteria. A crash analysis on composite tube with Johnson-cook damage criteria was carried out to determine maximum energy absorption capacity, peak force of the composite tube. In analysis of composite plate as we increase carbon volume fraction the buckling load on the composite plate also increases. Similarly, in analysis of composite cylinder we obtain the maximum buckling load in case of torsion. In drop weight impact test of composite plate by Hashin damage criteria we compute the maximum force required to cause significant deformation in the composite plate. In crash analysis of composite tube with Johnson-cook material model parameters we evaluate the energy absorption and peck force or maximum force to cause permanent deformation in composite tube.