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2018 | OriginalPaper | Buchkapitel

ε-Optimum Reliability-Based Cost Design of Longitudinally Stiffened Welded Steel Plates

verfasst von : Luis M. C. Simões, Károly Jármai, Zoltán Virág

Erschienen in: Vehicle and Automotive Engineering 2

Verlag: Springer International Publishing

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Abstract

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.

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Titel: ε-Optimum Reliability-Based Cost Design of Longitudinally Stiffened Welded Steel Plates
verfasst von: Luis M. C. Simões
Károly Jármai
Zoltán Virág
Verlag: Springer International Publishing
Buch: Vehicle and Automotive Engineering 2
Print ISBN: 978-3-319-75676-9

Electronic ISBN: 978-3-319-75677-6

Copyright-Jahr: 2018
DOI: https://doi.org/10.1007/978-3-319-75677-6_56

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