Abstract
The present study shows the difference between structures optimized for minimum volume and minimum cost. The cost function contents the cost of material, assembly, welding and painting. A cantilever tubular truss with parallel chords is investigated. The compression rods are designed against overall buckling so that the required cross-sectional areas are calculated with approximate closed formulae. In the cost function also the cost of cutting and edge grinding of the circular hollow section rod ends is included. The heights of the truss corresponding to minimum volume and cost are different, but the cost difference between the two optima is not high.
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© 2013 Springer-Verlag Berlin Heidelberg
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Farkas, J., Jármai, K. (2013). Tubular Trusses. In: Optimum Design of Steel Structures. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-36868-4_5
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DOI: https://doi.org/10.1007/978-3-642-36868-4_5
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-36867-7
Online ISBN: 978-3-642-36868-4
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