fprintf('Assembling Stiffness Matrix...\n'); for e = 1:n_elem % Get node IDs and coordinates sctr = element(e, :); coords = node(sctr, :);
all_dofs = 1:total_dof; free_dofs = setdiff(all_dofs, fixed_dofs); Composite Plate Bending Analysis With Matlab Code
% Transformation matrix for stresses (3x3) T = [m^2, n^2, 2*m*n; n^2, m^2, -2*m*n; -m*n, m*n, m^2-n^2]; fprintf('Assembling Stiffness Matrix
%% 2. Mesh Generation [X, Y, nodeCoords, elements] = mesh_rectangular(a, b, nx, ny); nNodes = size(nodeCoords,1); nElem = size(elements,1); ndof = 5; % DOF per node: w, theta_x, theta_y nDofs = nNodes * ndof; fprintf('Assembling Stiffness Matrix...\n')
) is a top choice. It provides a generalized MATLAB implementation of Classical Laminate Plate Theory (CLPT)
function Q = orthotropic_Q(E1, E2, nu12, G12) nu21 = nu12 * E2 / E1; denom = 1 - nu12 nu21; Q11 = E1/denom; Q12 = nu12 E2/denom; Q22 = E2/denom; Q66 = G12; Q = [Q11, Q12, 0; Q12, Q22, 0; 0, 0, Q66]; end
