Research Article
Nov 1974
Optimization of Long-Span Cold-Formed Truss Purlins
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VIEW THE REPLYPublication: Journal of the Structural Division
Volume 100, Issue 11
Abstract
The value of mathematical optimization tools for the cold-formed steel industry is investigated by using a particular technique to redesign a building systems product already being successfully marketed. The optimization technique employed is a variation of the cutting-plane method wherein a sequence of linear programming problems is solved to obtain the solution of the nonlinear problem. Twenty-four design parameters and 64 constraints, mostly nonlinear and drawn unchanged from the Specification for the Design of Cold-Formed Steel Structural Members (AISI), form the nonlinear programming problem that is solved for the design. Most of the constraints involve buckling behavior of some form. An example using a member of the class of components that was redesigned is employed to demonstrate how the problem is set up for solution.
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Published In
Journal of the Structural Division
Volume 100 • Issue 11 • November 1974
Pages: 2275 - 2288
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Nov 1974
Published online: Feb 1, 2021
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Authors
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Richard T. Douty, M.ASCE
Prof. of Civ. Engrg., Univ. of Missouri–Columbia, Columbia, Mo.
James O. Crooker, AM.ASCE
Sr. Struct. Consultant, Butler Manufacturing Co., Kansas City, Mo.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.