% To get correct results, replace this function with a proper % Kirchhoff plate element or use Mindlin-Reissner theory. % The current script structure is valid but needs B matrix implementation.
% Jacobian for rectangular element detJ = a_elem * b_elem; Composite Plate Bending Analysis With Matlab Code
%% 7. Solve System U = K_global \ F_global; % To get correct results, replace this function
% Laminate layup: symmetric [0/90/90/0] (4 layers) layup_angles = [0, 90, 90, 0]; % degrees n_layers = length(layup_angles); t_layer = h_total / n_layers; % each layer thickness Solve System U = K_global \ F_global; %
% In practice, you can use the MITC4 element for plates. % Here we output a dummy B and detJ for completeness.
% Find center deflection center_x = floor(nx/2)+1; center_y = floor(ny/2)+1; w_center_FEM = W(center_x, center_y);
Introduction Composite materials, particularly laminated fiber-reinforced polymers, have revolutionized aerospace, automotive, and civil engineering due to their high stiffness-to-weight and strength-to-weight ratios. However, analyzing the bending behavior of composite plates is more complex than isotropic plates due to orthotropic properties, layup sequences, and coupling effects (bending-stretching coupling).