%% 2. Laminate Definition % Stack sequence: [0/90/0] (Symmetric) layers = [0, 90, 0]; % Fiber angles in degrees total_thickness = 0.002; % Total thickness in meters (2mm) n_plies = length(layers); h = total_thickness / n_plies; % Thickness of single ply

% At each node i, shape function for w gives 1 at node i, 0 at others. % Using bilinear shape functions for w alone would cause incompatibility. % For a working element, we use the ACM element (12 DOF). Simplified here:

% Derivatives wrt x,y dN_dx = invJ(1,1)*dN_dxi + invJ(1,2)*dN_deta; dN_dy = invJ(2,1)*dN_dxi + invJ(2,2)*dN_deta;

% Stress = Q_bar * Strain stress_bot = Q_bar_store(:,:,k) * strain_bot; stress_top = Q_bar_store(:,:,k) * strain_top;

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

This MATLAB implementation provides a robust foundation for analyzing bending in laminated composite plates using FSDT. The code demonstrates how to: