Nonlinear thermal vibration characteristic analysis of composite thin-cylindrical shells

The nonlinear thermal vibration characteristic of the composite thin-cylindrical shells under linear temperature field is investigated by the ANSYS parametric design language (APDL). The nature frequencies of the composite thin-cylindrical shell with different boundary conditions, layer numbers and orientations are calculated and analyzed. The numerical results show that the nature frequencies of the structure are affected by the temperature effect, boundary conditions and the number or orientations of layers; the proper orientations can change the nature frequencies; the effect degree on the nature frequencies of cross-ply laminated cylindrical shell is different from that of the antisymmetric one. These conclusions can provide some guidance to the structure design and heat-resistant design of composite structures.