Research Article
May 1968
Optimum Design Using Available Sections
Publication: Journal of the Structural Division
Volume 94, Issue 5
Abstract
Conventional optimum structural design methods assume that a continuous spectrum of member sizes is available to the designer. For example, in the minimum weight rigid-plastic design of stiff-jointed frameworks, it is usually assumed that the weight per unit length of frame members is a linear function of their fully plastic moment. In actual fact, the sections available consist of a finite range of discrete member sizes. By making use of discrete programming techniques, it is possible to derive design methods which do not depend on theoretical weight-strength functions, but instead work directly with the available discrete sections. Two classes of design problem are considered: (1) The design of stiff jointed frameworks using rigid-plastic theory; and (2) the elastic design of statically determinate triangulated frameworks subject to deflection constraints.
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Published In
Journal of the Structural Division
Volume 94 • Issue 5 • May 1968
Pages: 1219 - 1244
Copyright
© 1968 American Society of Civil Engineers.
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Published in print: May 1968
Published online: Feb 1, 2021
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Authors
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A. Raymond Toakley
Principal Engr., Commonwealth Dept. of Works, Head Office, Melbourne, Australia; formerly Senior Research Assoc., Civ. Engrg., Dept., Faculty of Science, Univ. of Manchester, England
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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.