Optimal Design Analysis of Prestressed Composite Space Truss

Feng Liu; Kang Li

doi:10.4028/www.scientific.net/AMM.638-640.178

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 638-640Optimal Design Analysis of Prestressed Composite...

Optimal Design Analysis of Prestressed Composite Space Truss

Abstract:

More than 40 prestressed composite space truss models of different dimensions are built with APDL design language, and the span, height, lattice number, prestressed value, section area of the chord, width and height of ribbed beam are chosen as design variables. With selecting total cost as objective function, constraint conditions such as strength, rigidity, stability, section size, prestressed limit and structural deflection are also considered, we conduct optimal design for structures by means of zero order optimization. From the results of regression analysis, the optimal span-to-height ratio, lattice number and empirical formula of optimal prestressed value can be found out for designers’ references.

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Periodical:

Applied Mechanics and Materials (Volumes 638-640)

Pages:

178-184

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.638-640.178

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Online since:

September 2014

Authors:

Feng Liu*, Kang Li

Keywords:

Lattice Number, Optimal Design, Prestressed Composite Space Truss, Prestressed Value, Span-to-Height Ratio

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References

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