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Title: Post-buckling analysis of planar elastica using a hybrid numerical strategy
Authors: Wang, T.Y. 
Koh, C.G. 
Liaw, C.Y. 
Keywords: Constrained-optimization
Genetic algorithm
Quasi-Newton method
Issue Date: Jun-2010
Citation: Wang, T.Y., Koh, C.G., Liaw, C.Y. (2010-06). Post-buckling analysis of planar elastica using a hybrid numerical strategy. Computers and Structures 88 (11-12) : 785-795. ScholarBank@NUS Repository.
Abstract: Many structural mechanics problems, such as post-buckling of elastica, involve determining multi-equilibrium states of a nonlinear system. Typically, the stable equilibrium states are found by searching for minima of the potential energy function subjected to some constraints. In this paper, the method of genetic algorithm combined with the quasi-Newton method is applied to search for the multiple minima of the strain energy of various elastica problems. The proposed hybrid methodology is relatively straightforward to implement and is adopted to study post-buckling behaviour of planar elastica modelled as multi-link systems for various boundary conditions and sidewall constraints. © 2010 Elsevier Ltd. All rights reserved.
Source Title: Computers and Structures
ISSN: 00457949
DOI: 10.1016/j.compstruc.2010.03.004
Appears in Collections:Staff Publications

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