The small load, P1, creates an imperfection that reduces the carrying capacity of the axially compressed cylindrical shell

From:
http://www.nafems.org/events/other/composite_laminated_shell_structures_desicos_workshop/

and

http://www.desicos.eu

3rd International Conference on Buckling and Postbuckling Behavior of Composite Laminated Shell Structures with DESICOS Workshop
25-27 March, 2015

DESICOS (New Robust DESIgn Guideline for Imperfection-Sensitive COmposite launcher Structures) aims to exploit considerable reserves in the capacities of imperfection-sensitive composite launcher structures by applying the Single Perturbation Load Approach (SPLA), which assumes that a large enough disturbing loadk, P1, leads to the worst realistic geometric imperfection, combined with a Specific Stochastic Approach to take into account load imperfection, thickness imperfection, etc.

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