Abstract
The free vibration and dynamic response for the CFRP and GFRP cross-ply laminated circular cylindrical shells under impulse loads are investigated by using the first-order shear deformation shell theory. The modal analysis technique is used to develop the analytical solutions of the simply-supported cylindrical shells. The analysis is based on the expansion of the loads, displacements and rotations in a double Fourier series which satisfies the end boundary conditions of simply support. The analytical solution is assumed to be separable into a function of time and a function of position. In this study, the considered impulse load types are step pulse, sine pulse, three triangular (1, 2, 3) pulses and exponential pulse. The solution for the given loading pulse can be found by involving the convolution integral. The results show that dynamic responses are governed primarily by natural period of the structure.
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