Minimum-Weight Design of a Portal Frame

by W. Prager,

Serial Information: Journal of the Engineering Mechanics Division, 1956, Vol. 82, Issue 4, Pg. 1-10

Document Type: Journal Paper


Design of frames under assumption that unit weight of structural member is proportional to α-th power of its fully plastic moment, positive exponent α being smaller than unity; for α = 2/3, chart is developed that gives minimum weight design for various geometries and loading conditions of portal frame.

Subject Headings: Minimum weight design | Frames | Plastic design | Plastics | Moment (mechanics) | Geometrics | Load factors

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