The aim of this work is the reliability-based optimization of a stiffened plate subjected to in-plane or combined in-plane and transverse loading. The design variables are the thickness of the base plate, the number of stiffeners and their thickness. The constraints deal with the overall plate buckling, the stiffener failure and the distortion of the plate due to welding. The cost function includes the cost of material, assembly and welding. Randomness is considered both in loading and material properties. A level II reliability method (FORM) is employed. The overall structural reliability is obtained by using Ditlevsen method of conditional bounding. The branch and bound strategy is employed to enumerate ε-optimum costs, which are solutions within a specified tolerance of the optimum.
ε-Optimum Reliability-Based Cost Design of Longitudinally Stiffened Welded Steel Plates
Lect.Notes Mechanical Engineering
Vehicle and Automotive Engineering ; 2018 ; Miskolc, Hungary May 23, 2018 - May 25, 2018
2018-05-10
17 pages
Article/Chapter (Book)
Electronic Resource
English
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