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• W2057815923 abstract "This paper presents a canonical dual mixed finite element method for the post-buckling analysis of planar beams with large elastic deformations. The mathematical beam model employed in the present work was introduced by Gao in 1996, and is governed by a fourth-order non-linear differential equation. The total potential energy associated with this model is a non-convex functional and can be used to study both the pre- and the post-buckling responses of the beams. Using the so-called canonical duality theory, this non-convex primal variational problem is transformed into a dual problem. In a proper feasible space, the dual variational problem corresponds to a globally concave maximization problem. A mixed finite element method involving both the transverse displacement field and the stress field as approximate element functions is derived from the dual variational problem and used to compute global optimal solutions. Numerical applications are illustrated by several problems with different boundary conditions." @default.
• W2057815923 created "2016-06-24" @default.
• W2057815923 creator A5048360771 @default.
• W2057815923 creator A5067746631 @default.
• W2057815923 date "2012-03-01" @default.
• W2057815923 modified "2023-10-15" @default.
• W2057815923 title "Canonical dual finite element method for solving post-buckling problems of a large deformation elastic beam" @default.
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• W2057815923 doi "https://doi.org/10.1016/j.ijnonlinmec.2011.05.012" @default.
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