Composite Plate Bending Analysis With Matlab Code File

% For a fully functional version, please contact author or % implement shape functions from "Analysis of Laminated Composite Plates" by Reddy.

%% 6. Apply Boundary Conditions (Simply Supported) % Simply supported: w = 0, and Mxx=0, Myy=0 approximately enforced by free θ % At x=0 and x=a: w=0, Myy=0 -> θy free, θx free (if not clamped) % Standard SS: w=0, moment normal to edge zero. % Here we enforce w=0 on all edges and keep θx, θy free. Composite Plate Bending Analysis With Matlab Code

% Node numbering: global DOF = 3*(node_index - 1) + dof (1:w, 2:theta_x, 3:theta_y) n_nodes = nx * ny; n_dof = 3 * n_nodes; % For a fully functional version, please contact

% Find center deflection center_x = floor(nx/2)+1; center_y = floor(ny/2)+1; w_center_FEM = W(center_x, center_y); % Here we enforce w=0 on all edges and keep θx, θy free

% Contribution to bending stiffness D zk = z_coords(k+1); zk_1 = z_coords(k); D = D + (1/3) * Q_bar * (zk^3 - zk_1^3); end

%% 5. Assemble Global Matrices K_global = sparse(n_dof, n_dof); F_global = zeros(n_dof, 1);