2012
DOI: 10.1016/j.tws.2012.06.008
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Self-shape optimisation application: Optimisation of cold-formed steel columns

Abstract: a b s t r a c tThis paper presents the optimisation of cold-formed steel open columns using the recently developed self-shape optimisation method that aims to discover new profile shapes. The strength of the coldformed steel sections is calculated using the Direct Strength Method, and the rules developed in the present work to automatically determine the local and distortional elastic buckling stresses from the Finite Strip and constrained Finite Strip Methods are discussed. The rules are verified against conv… Show more

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Cited by 48 publications
(55 citation statements)
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“…This paper employs the previously developed GA-based shape optimisation algorithm [4,5], referred to as the "self-shape optimisation algorithm". The algorithm uses the coordinates (x, y) of the floating points constituting the cross-sections to define the individuals in a given design space.…”
Section: Overviewmentioning
confidence: 99%
See 4 more Smart Citations
“…This paper employs the previously developed GA-based shape optimisation algorithm [4,5], referred to as the "self-shape optimisation algorithm". The algorithm uses the coordinates (x, y) of the floating points constituting the cross-sections to define the individuals in a given design space.…”
Section: Overviewmentioning
confidence: 99%
“…An augmented Lagrangian constraint-handling method [15] is used to automatically control the penalty function coefficients to remain finite in order to avoid ill-conditioned solutions. Cross-over and mutation operators are performed on the floating points constituting a cross-section (see [4,5], Sections 2.4 and 2.5 for more details). As the problem is singly-symmetric, only half of the cross-section is considered by the GA operators.…”
Section: Overviewmentioning
confidence: 99%
See 3 more Smart Citations