Determination of natural frequencies and mode shapes of a wind turbine rotor blade using Timoshenko beam elements

Stanoev, Evgueni; Kusuma Chandrashekhara, Sudhanva

doi:https://doi.org/10.5194/wes-4-57-2019

Articles | Volume 4, issue 1

https://doi.org/10.5194/wes-4-57-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/wes-4-57-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 4, issue 1

Research article

|

28 Jan 2019

Research article |

| 28 Jan 2019

Determination of natural frequencies and mode shapes of a wind turbine rotor blade using Timoshenko beam elements

Evgueni Stanoev and Sudhanva Kusuma Chandrashekhara

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Final revised paper (published on 28 Jan 2019)
Preprint (discussion started on 15 Oct 2018)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Assessment of wes-2018-64', Anonymous Referee #1, 20 Nov 2018
- AC1: 'Authors comment on Referee comment 1', Evgueni Stanoev, 23 Nov 2018
  - RC3: 'Author's reply', Anonymous Referee #1, 26 Nov 2018
RC2: 'The review as per request of the associate editor', Anonymous Referee #2, 22 Nov 2018
- AC2: 'Authors comment on referee #2', Evgueni Stanoev, 27 Nov 2018
  - AC3: 'my last corrected version of the article', Evgueni Stanoev, 07 Dec 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Evgueni Stanoev on behalf of the Authors (11 Dec 2018) Author's response Manuscript

ED: Publish as is (25 Dec 2018) by Lars Pilgaard Mikkelsen

ED: Publish subject to technical corrections (02 Jan 2019) by Jakob Mann (Chief editor)

AR by Evgueni Stanoev on behalf of the Authors (09 Jan 2019) Manuscript

Short summary

In the frame of a multi-body simulation of a wind turbine, the lowest rotor blade eigenmodes are used to describe their elastic deformations. In this paper, a finite Timoshenko beam element is proposed based on the transfer matrix method. The element stiffness and mass matrices are derived by numerical integration of the differential equations of motion. A numerical example with generic rotor blade data demonstrates the performance of the method in comparison with FAST/ADAMS software results.