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50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
In this paper a multi-mode finite element implementation of Koiter's initial post-buckling theory with the inclusion of the pre-buckling nonlinearity is presented. Using this implementation a multi-mode initial post-buckling analysis of an axially loaded composite cylindrical shell has been carried out with a small number of representative modes. The implementation has been done in a general purpose finite element code. Results are compared with results from semi-analytical perturbationdoi:10.2514/6.2009-2557 fatcat:blv7hnf4r5ct7dvmgiq6aicl6u