Impact of floater flexibility on tower eigenfrequencies of a spar-type floating offshore wind turbine: measurement-based assessment and model calibration

Cesar Aguilera, Romain Ribault, Jerome De-Lauzon, and Adrien Hirvoas

Viewed

Total article views: 1,136 (including HTML, PDF, and XML)

HTML	PDF	XML	Total	BibTeX	EndNote
853	233	50	1,136	54	75

HTML: 853
PDF: 233
XML: 50
Total: 1,136
BibTeX: 54
EndNote: 75

Views and downloads (calculated since 25 Aug 2025)

Month	HTML	PDF	XML	Total
Aug 2025	90	15	3	108
Sep 2025	326	13	14	353
Oct 2025	88	8	9	105
Nov 2025	64	13	3	80
Dec 2025	44	8	7	59
Jan 2026	61	40	4	105
Feb 2026	52	36	2	90
Mar 2026	59	55	2	116
Apr 2026	68	44	6	118
May 2026	1	1	0	2

Cumulative views and downloads (calculated since 25 Aug 2025)

Month	HTML	PDF	XML	Total
Aug 2025	90	15	3	108
Sep 2025	326	13	14	353
Oct 2025	88	8	9	105
Nov 2025	64	13	3	80
Dec 2025	44	8	7	59
Jan 2026	61	40	4	105
Feb 2026	52	36	2	90
Mar 2026	59	55	2	116
Apr 2026	68	44	6	118
May 2026	1	1	0	2

Viewed (geographical distribution)

Total article views: 1,136 (including HTML, PDF, and XML) Thereof 1,119 with geography defined and 17 with unknown origin.

Country	#	Views	%


Total:	0
HTML:	0
PDF:	0
XML:	0


Total:	0
HTML:	0
PDF:	0
XML:	0

Latest update: 04 May 2026

Short summary

Our analysis has revealed that the natural frequencies of the tower vary depending on the operational state of the turbine and are significantly influenced by the flexibility of the support structure. For a spar-type floater, a mismatch of 40 % was found. This work highlights the importance of continuous structural monitoring of offshore assets, the need to raise awareness within the design community and the current lack of explicit guidance on this issue in recommended industry practices.