| The flexural vibration of symmetrically laminated trapezoidal composite plates is investi-gated in this paper by using the admissible displacement function proposed herein. The nu-merical examples show that the technique developed is valid and effective in the vibrationalanalysis of rectangular,parallel-gram,triangular,symmetric and unsymmetric laminatedtrapezoidal plates with various combinations of boundary conditions and internal point con-straints. |