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2017 | OriginalPaper | Buchkapitel

Improved Canonical Dual Finite Element Method and Algorithm for Post-Buckling Analysis of Nonlinear Gao Beam

verfasst von : Elaf Jaafar Ali, David Yang Gao

Erschienen in: Canonical Duality Theory

Verlag: Springer International Publishing

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Abstract

This paper deals a study on post-buckling problem of a large deformed elastic beam by using a canonical dual mixed finite element method (CD-FEM). The nonconvex total potential energy of this beam can be used to model post-buckling problems. To verify the triality theory, different types of dual stress interpolations are used. Applications are illustrated with different boundary conditions and different external loads using semi-definite programming (SDP) algorithm. The results show that the global minimizer of the total potential energy is stable buckled configuration, the local maximizer solution leads to the unbuckled state, and both of these two solutions are numerically stable. While the local minimizer is unstable buckled configuration and very sensitive.

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Metadaten
Titel
Improved Canonical Dual Finite Element Method and Algorithm for Post-Buckling Analysis of Nonlinear Gao Beam
verfasst von
Elaf Jaafar Ali
David Yang Gao
Copyright-Jahr
2017
DOI
https://doi.org/10.1007/978-3-319-58017-3_14