% Plot the solution plot(0:L/N:L, u); xlabel('x'); ylabel('u(x)'); title('Solution of 1D Poisson''s Equation');
% --- Natural Boundary Conditions (Point Load at tip) -- F_mag = -1000; % 1000 N downward tip_node = find(node(:,1) > L-tol & node(:,2) > H/2-tol & node(:,2) < H/2+tol); % Center node at tip if isempty(tip_node) % Fallback: apply to top right corner [~, idx] = max(node(:,1) + node(:,2)); tip_node = idx; end F(2*tip_node) = F_mag; matlab codes for finite element analysis m files
function stress = ComputeCSTStress(E, nu, plane, B, U_e) D = ... (as before); stress = D * B * U_e; end % Plot the solution plot(0:L/N:L