Critical Buckling Analysis of Complex Structures with Uncertain Initial Geometric Imperfection via Convex Methods
首发时间:2012-12-17
Abstract:Critical buckling problem of complex structures with uncertain initial geometric imperfection was studied based on the non-probabilistic convex methods. By virtue of the Taylor series expansion, interval analysis and convex models were proposed to predict the worst critical buckling load and the weakest shape of the initial geometric imperfection for complex structures, which may overcome the limitation of the analytical or series solutions of critical buckling load that is viable only for simple structures. The non-probabilistic convex methods and probabilistic method were compared critically. Composite stiffened plate and cylindrical shell were used to illustrate the feasibility and validity of the proposed methods.
keywords: critical buckling analysis uncertainty initial geometric imperfection interval analysis convex models
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