Abstract: Hill's plastic theory of anisotropic materials is used and nonlinear finite element equations of laminated plate structure by Updated Lagrange method is set up in this paper. These dynamic equations are solved by incremental and Wilson-θ method. Furthermore, using a special technique to deal with pressure-boundary conditions, it also considers transverse shear and material extension-compression moduli. Finally, the local failure of strength of anisotropic materials is discussed.

Key words: impact-load, Updated-Langrange method, incremental, laminated plate structure.