Influence of stochastic geometric imperfection on the ultimate strength of stiffened panel in compression
Georgiadis, D.G. and Samuelides, M.S. and Li, S. and Kim, D.K. and Benson, S.; Amdahl, J. and Guedes Soares, C., eds. (2021) Influence of stochastic geometric imperfection on the ultimate strength of stiffened panel in compression. In: Developments in the Analysis and Design of Marine Structures. Taylor & Francis, NOR. ISBN 9781003230373 (https://www.taylorfrancis.com/chapters/edit/10.120...)
Preview |
Text.
Filename: Georgiadis_etal_DADMS_2021_Influence_of_stochastic_geometric_imperfection_on_the_ultimate_strength_of_stiffened_panel_in_compression.pdf
Accepted Author Manuscript Download (1MB)| Preview |
Abstract
The initial geometric imperfection is recognized as substantially influential on the buckling behaviour and ultimate strength of stiffened plated structures. Conventionally, the initial geometric imperfection is defined in a deterministic manner, such as a hungry-horse mode, ARE mode or critical buckling mode with characteristic magnitudes. However, due to the uncertainty in manufacturing and in-service effects, the initial geometric imperfection should be better described as a random field. This paper aims to assess the effects of the stochastic nature of geometric imperfection on the ultimate strength of stiffened panel in compression. A probabilistically-based imperfection model developed by spectral representation method is applied to an orthogonally stiffened panel. A Monte-Carlo Simulation enhanced by a Latin-Hypercube Scheme (LHS) is utilized to sample the initial geometric imperfection. A series of nonlinear finite element analyses are completed to calculate the ultimate compressive strength of the case study model. With reference to the deterministic representations, the impact of the stochastic imperfection model is discussed. The present work may provide useful insights for the reliability-based ship structural assessment regarding the uncertainty due to geometric imperfection.
-
-
Item type: Book Section ID code: 78907 Dates: DateEvent29 December 2021Published29 December 2021Published Online15 May 2021AcceptedNotes: Published under the CRC Press imprint. Subjects: Technology > Hydraulic engineering. Ocean engineering Department: Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering Depositing user: Pure Administrator Date deposited: 15 Dec 2021 11:30 Last modified: 29 Aug 2024 00:34 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/78907