Modeling the Effect of Preliminary Quasi-Static Loading on the Dynamic Buckling of Composite Cylindrical Shells under Axial Compressive Loading
N. A. Abrosimov, A. V. Elesin, L. A. Igumnov
Research Institute of Mechanics, Lobachevsky Nizhny Novgorod State University, Nizhny Novgorod, 603950, Russia
Keywords: composite materials, cylindrical shells, dynamic stability, numerical methods, quasi-static and dynamic loads
Abstract
Based on the applied theory of shells, an energetically consistent resolving system of equations has been formulated and a complex numerical method using an explicit variational-difference schemes has been developed to solve both quasi-static and dynamic problems of nonlinear nonaxisymmetric deformation and buckling of composite cylindrical shells. The reliability of the developed method is verified by comparing calculation results and experimental data. For various of reinforcement structures, an analysis of critical loads and characteristic forms of buckling of composite cylindrical shells previously subjected to quasi-static loading internal pressure followed by dynamic loading by axial compression.
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