COMPUTER AIDED DESIGN IN CASE OF THE LAMINATED COMPOSITE MATERIALS

Abstract

The work firstly shows the analytical calculus model used to compute the distribution of the strains and stresses over the thickness in case of the laminated composite plates subjected to bending. Then, it is briefly described the main steps (calculus procedures) of the Matlab program that is used in design of the laminated composite plate in order to compute the stresses and to draw the distributions of the both strains and stresses. Therefore, rectangular plates subjected to the uniformly distributed force, with different boundary conditions (all sides simply supported, two sides simple supported while the others sides are free end) may be designed by using this program. The program also reports: the stiffness matrix corresponding to the plate element of the laminated composite plate that is computed; the safety coefficients are also computed by using one of the failure theories (maximum stress criterion; Tsai-Hill’s criterion, Tsai-Wu’s criterion).