Thermal postbuckling strength improvement prediction of Shape Memory alloy fiber embedded damaged layered composite structure

The postbuckling critical temperature values for the damaged smart (shape memory alloy fiber-reinforced) layered composite are computed numerically (using MATLAB code) via a higher-order mathematical model. The geometrical distortion of the panel is modeled mathematically using higher-order kinematics and Green-Lagrange strain. The model includes both nonlinearities, i.e. the geometry (due to large distortion) and material (because of smart fiber). The marching technique introduced the material nonlinearity as a function of the temperature cycle. The critical thermal load values are obtained by solving the nonlinear eigenvalue. The code is validated and extended to understand the influences of parameters on postbuckling temperatures.