A simplified formula for calculating the limit load of cracked offshore wind turbine monopile under bending
Fajuyigbe, A. and Brennan, F. (2022) A simplified formula for calculating the limit load of cracked offshore wind turbine monopile under bending. Marine Structures, 83. 103164. ISSN 0951-8339 (https://doi.org/10.1016/j.marstruc.2022.103164)
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Abstract
A simplified methodology is proposed for calculating the plastic collapse (limit) bending moment load of a pipe with a circumferential flaw with an emphasis on its application for use in the assessment of cracked offshore wind turbine monopile using failure assessment diagrams. The proposed methodology is based on the theory of net section collapse (NSC) but differs from existing approaches in that it does not need idealisation and categorisation of the crack before assessment. The proposed methodology is validated against results presented in literature and also finite element analysis results. Although it is possible to obtain limit loads using FE analysis, this is computationally expensive and time consuming. The proposed approach allows for nearinstantaneous calculation of limit load for any arbitrary crack configuration and loading direction. This is a significant development for the analysis of offshore wind turbine monopiles as it allows the suitability of the cracked structure to be assessed in pseudo-real time.
ORCID iDs
Fajuyigbe, A. and Brennan, F. ORCID: https://orcid.org/0000-0003-0952-6167;-
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Item type: Article ID code: 80106 Dates: DateEvent31 May 2022Published22 January 2022Published Online16 January 2022AcceptedSubjects: Technology > Hydraulic engineering. Ocean engineering Department: Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering Depositing user: Pure Administrator Date deposited: 06 Apr 2022 16:23 Last modified: 24 Oct 2024 00:40 URI: https://strathprints.strath.ac.uk/id/eprint/80106