Optimal design of prestressed trusses

R. Levy; A. Hanaor

doi:10.1016/0045-7949(92)90517-4

Optimal design of prestressed trusses

R. Levy, A. Hanaor

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

This paper is concerned with the effect of prestress on the minimum weight design of singly loaded trusses which are required to satisfy stress constraints. Use is made of realizability theorems to derive two distinct formulations-the equilibrium formulation and the hybrid formulation, in a linear programming form. The former has the member forces as unknown variables whereas the latter searches directly for the prestressing system and calculates the member forces a posteriori. A 72-bar double layered grid is used as an example to show weight savings of up to 37%.

Original language	English
Pages (from-to)	741-744
Number of pages	4
Journal	Computers and Structures
Volume	43
Issue number	4
DOIs	https://doi.org/10.1016/0045-7949(92)90517-4
State	Published - 17 May 1992
Externally published	Yes

ASJC Scopus subject areas

Civil and Structural Engineering
Modeling and Simulation
General Materials Science
Mechanical Engineering
Computer Science Applications

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10.1016/0045-7949(92)90517-4

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AB - This paper is concerned with the effect of prestress on the minimum weight design of singly loaded trusses which are required to satisfy stress constraints. Use is made of realizability theorems to derive two distinct formulations-the equilibrium formulation and the hybrid formulation, in a linear programming form. The former has the member forces as unknown variables whereas the latter searches directly for the prestressing system and calculates the member forces a posteriori. A 72-bar double layered grid is used as an example to show weight savings of up to 37%.

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Optimal design of prestressed trusses

Abstract

ASJC Scopus subject areas

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