Phase-field buckling analysis of cracked stiffened functionally graded plates

A finite element method and phase-field model used by authors have been firstly extended to the buckling analysis of stiffened functionally graded (FG) plate with cracks. The finite formulation of the plate is based on the first order shear deformation theory (FSDT). The material properties of the FG plate change from the bottom surface to the top one by a power-law function, the stiffener is full of the material, which is the same as the bottom...