Simulation of three-point bending of a simple composite beam using the commercial FEM software

Abstract

The paper present the results of the three-point bending simulation of a simple composite beam with using the HyperWorks commercial software. The bending simulation was performed for various composite material models available in the HyperWorks software and modeling methods (including Shell and Solid elements). Simulations results were compare with the analytical calculations and the laboratory tests. In addition the calculation time necessary for analyzed methods was also compared. The bending analysis was assumed as quasi static. Analytical calculations were made by deriving kinematic relations based on the Love-Kirchhoff hypothesis as well as the theory of transverse shear of 1st order. The sample beam was made of an epoxy composite reinforced with carbon fiber in autoclave technology. Twill 2k fabric from GURIT prepreg was used for the fabrication of laminate.