Dynamic interlaminar stresses in laminated plates with simply and fixed supports, subjected to free vibrations and thermal load

The response histories and distribution of dynamic interlaminar stresses in laminated plates with complex boundaries, subjected to free vibrations and thermal load is studied, based on dynamic differential equations. The number of layers and stacking sequence of the laminated plates may be arbitrary. The dynamic mode of displacements is taken account of triangular series. The plane stresses are calculated by using geometric equations and generalized Hooke's law. The interlaminar stresses are evaluated by integrating the 3-D equations of dynamic equilibrium, and utilizing given boundary conditions and continuity conditions between layers. The response histories and distribution of interlaminar stress under thermal load are presented considering various vibration modes and stacking sequence. The theoretical analyses and results are of significance in practical engineering applications.