Research on the Bistablity of FGM Laminate Plates

Bi-stable functionally graded material (FGM) laminated plates are studied in this paper. Considering the bistablity, the isotropic and anisotropic composite laminate plates are analyzed. The numerical results of different FGM under different loading are compared with homogeneous materials by using continuous graded thickness integration rule of shell element. Then, the bistablity of different rotation angle layered composites including [-45°/45°], [0°/90°], [45°/45°] are solved by Finite Element (FE) commercial software using the user defined material subroutine. The FGM model with different material property variation and different layups may lead to different configurations. The present model correctly predicts its mechanical behavior, it is helpful to design more appreciate structures to fit for many kind of special fields.