Comparisons of welded steel structures designed for minimum cost

Farkas, József (2016) Comparisons of welded steel structures designed for minimum cost. JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS, 11 (1). pp. 33-48. ISSN 1586-2070

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Abstract

Cost is an important characteristic of welded structures, since welding is an expensive fabrication technology. The developed cost calculation method enables designers to predict the cost of material, assembly, welding and painting costs in the design stage. Cost comparison can select the most economical structural version. Since only optimized versions can be compared to each other realistically, a minimum cost design procedure should be performed for each version. In the present study cost comparisons are discussed for the following welded structures: (a) a cantilever column constructed from stringer-stiffened circular cylindrical shell as well as from square box section with stiffened or cellular plates, (b) a stiffened or cellular plate supported at four corners, (c) a wind turbine tower constructed as a ring-stiffened slightly conical circular shell or as a tubular truss, (d) a ring-stiffened slightly conical shell with equidistant or non-equidistant stiffening.

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