STATIC AND DYNAMIC BUCKLING OF LAMINATED COMPOSITE SHELLS

This paper presents the results from numerical investigation of the behavior of cylindrical laminated shells subjected to suddenly applied loading. A numerical approach is used combining the finite element method with two different stability criteria namely the Budiansky-Roth and the phase-plane buckling criteria. In the finite element analysis an explicit time integration scheme is used implemented in the LS-DYNA commercial code. The response of the composite shells has been investigated at the presence and absence of static preloading. Results are presented for different values of the shell length, imperfection factors, stacking sequence, and laminae orientation, and for different static preloading magnitudes. Based on the presented results important conclusions can be drawn concerning the shell behavior and its sensitivity to different system parameter variations.

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