Strength Calculation of Stiffened Structures Taking Into Consideration Realistic Weld Imperfections

Strength Calculation of Stiffened Structures Taking Into Consideration Realistic Weld Imperfections

C. Stapelfeld, B. Launert, H. Pasternak, N. Doynov, V. Michailov

Abstract. The topic of this article is the application of an analytical numerical hybrid model for a realistic prediction of imperfections induced by welds. At the beginning, the analytical model, its physical basis as well as the physical interrelationships are explained. This is followed by the explanation of the coupling procedure between the analytical model and the numerical calculation. Afterwards, the coupled hybrid model is applied on the investigated stiffened curved structure for the determination of the weld imperfections. An ultimate load analysis gives information about the load carrying behavior under axial loading. The results are compared against the traditional approach using eigenmode-based imperfections. The comparison underlines the potential additional utilization of load bearing capacity by this new approach.

Keywords
Strength Calculation, Welding, Imperfections, Load Capacity, Stiffened Structures, Curved Structures, Hybrid Model

Published online 9/11/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: C. Stapelfeld, B. Launert, H. Pasternak, N. Doynov, V. Michailov, ‘Strength Calculation of Stiffened Structures Taking Into Consideration Realistic Weld Imperfections’, Materials Research Proceedings, Vol. 6, pp 245-250, 2018

DOI: https://dx.doi.org/10.21741/9781945291890-39

The article was published as article 39 of the book Residual Stresses 2018

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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