New shape function solutions for fracture mechanics analysis of offshore wind turbine monopile foundations

Simple item page
dc.contributor.authorBocher, Mathieu
dc.contributor.authorMehmanparast, Ali
dc.contributor.authorBraithwaite, Jarryd
dc.contributor.authorShafiee, Mahmood
dc.date.accessioned2018-06-15T15:04:24Z
dc.date.available2018-06-15T15:04:24Z
dc.date.issued2018-05-03
dc.description.abstractOffshore wind turbines are considered one of the most promising solutions to provide sustainable energy. The dominant majority of all installed offshore wind turbines are fixed to the seabed using monopile foundations. To predict the lifetime of these structures, reliable values for shape function and stress intensity factor are needed. In this study, a new equation is developed through finite element simulations which have been performed for a wide range of monopile geometries with different dimensions, crack lengths and depths, to evaluate shape function and stress intensity factor solutions for monopiles. The new solutions have been verified through comparison with the existing solutions provided by Newman & Raju for small hollow cylinders. The empirical shape function solutions developed in this study are employed in a case study and the results have been compared with the existing shape function solutions. It is found that the old solutions provide inaccurate estimations of fatigue crack growth in monopiles and they underestimate or overestimate the fatigue life depending on the shape function solution employed in the structural integrity assessment. The use of the new solution will result in more accurate monopile designs as well as life predictions of existing monopile structures.en_UK
dc.identifier.citationBocher M, Mehmanparast A, Braithwaite J, Shafiee M. (2018) New shape function solutions for fracture mechanics analysis of offshore wind turbine monopile foundations. Ocean Engineering, Volume 160, July 2018, pp. 264-275en_UK
dc.identifier.cris20581777
dc.identifier.issn0029-8018
dc.identifier.urihttps://doi.org/10.1016/j.oceaneng.2018.04.073
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/13237
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectStress intensity factoren_UK
dc.subjectShape functionen_UK
dc.subjectFatigue crack growthen_UK
dc.subjectInspectionen_UK
dc.subjectMonopileen_UK
dc.subjectOffshore wind turbineen_UK
dc.titleNew shape function solutions for fracture mechanics analysis of offshore wind turbine monopile foundationsen_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
New_shape_function_solutions_for-monopile_foundations-2018.pdf
Size:
1.18 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SWEE)