International Journal of Optimization in Civil Engineering
دانشگاه علم و صنعت ایران
Iran University of Science & Technology
http://ijoce.iust.ac.ir
18
agent2
2228-7558
en
jalali
1389
12
1
gregorian
2011
3
1
1
1
online
1
fulltext
en
MATHEMATICAL AND TECHNICAL OPTIMA IN THE DESIGN OF WELDED STEEL SHELL STRUCTURES
Optimal design
Optimal design
پژوهشي
Research
In some cases the optimum is the minimum of the objective function (mathematical optimum), but in other cases the optimum is given by a technical constraint (technical optimum). The present paper shows the both types in two problems. The first problem is to find the optimum dimensions of a ring-stiffened circular cylindrical shell subject to external pressure, which minimize the structural cost. The calculation shows that the cost decreases when the shell diameter decreases. The decrease of diameter is limited by a fabrication constraint that the diameter should be minimum 2 m to make it possible the welding and painting inside of the shell. The second problem is to find the optimum dimensions of a cantilever column loaded by compression and bending. The column is constructed as circular or conical unstiffened shell. The cost comparison of both structural versions shows the most economic one.
structural optimization, circular and conical cylindrical shells, cost calculation, buckling of plates and shells, economy of welded structures
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153
http://ijoce.iust.ac.ir/browse.php?a_code=A-10-1-9&slc_lang=en&sid=en
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Farkas
`1800319475328460048`

1800319475328460048
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