An alternative to the flutter derivatives

Michael Styrk Andersen, Anders Brandt

Research output: Contribution to conference without publisher/journalPaperResearchpeer-review

Abstract

A new simplified framework to study flutter and assess the full scale flutter wind speed is suggested. The flutter instability problem is reduced from a problem involving 8 flutter derivatives to only 4 coefficients. With this method it is possible to estimate the self-excited forces with increased precision by using stability diagrams. Furthermore, the physical transparency of the aerodynamic damping and stiffness terms is increased because the development in vertical and torsional damping and stiffness is analysed instead of flutter derivatives.
Original languageEnglish
Publication date10. Jun 2016
Number of pages7
Publication statusPublished - 10. Jun 2016
Event8th International Colloquium on Bluff Body Aerodynamics and Applications - Northeastern University, Boston, United States
Duration: 7. May 201611. May 2016
Conference number: 8
http://www.northeastern.edu/bbaa8/

Conference

Conference8th International Colloquium on Bluff Body Aerodynamics and Applications
Number8
LocationNortheastern University
CountryUnited States
CityBoston
Period07/05/201611/05/2016
Internet address

Cite this

Andersen, M. S., & Brandt, A. (2016). An alternative to the flutter derivatives. Paper presented at 8th International Colloquium on Bluff Body Aerodynamics and Applications, Boston, United States.
Andersen, Michael Styrk ; Brandt, Anders. / An alternative to the flutter derivatives. Paper presented at 8th International Colloquium on Bluff Body Aerodynamics and Applications, Boston, United States.7 p.
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keywords = "Flutter Derivatives, System Identification, Aerodynamic Damping, Aerodynamic Stiffness",
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Andersen, MS & Brandt, A 2016, 'An alternative to the flutter derivatives', Paper presented at 8th International Colloquium on Bluff Body Aerodynamics and Applications, Boston, United States, 07/05/2016 - 11/05/2016.

An alternative to the flutter derivatives. / Andersen, Michael Styrk; Brandt, Anders.

2016. Paper presented at 8th International Colloquium on Bluff Body Aerodynamics and Applications, Boston, United States.

Research output: Contribution to conference without publisher/journalPaperResearchpeer-review

TY - CONF

T1 - An alternative to the flutter derivatives

AU - Andersen, Michael Styrk

AU - Brandt, Anders

PY - 2016/6/10

Y1 - 2016/6/10

N2 - A new simplified framework to study flutter and assess the full scale flutter wind speed is suggested. The flutter instability problem is reduced from a problem involving 8 flutter derivatives to only 4 coefficients. With this method it is possible to estimate the self-excited forces with increased precision by using stability diagrams. Furthermore, the physical transparency of the aerodynamic damping and stiffness terms is increased because the development in vertical and torsional damping and stiffness is analysed instead of flutter derivatives.

AB - A new simplified framework to study flutter and assess the full scale flutter wind speed is suggested. The flutter instability problem is reduced from a problem involving 8 flutter derivatives to only 4 coefficients. With this method it is possible to estimate the self-excited forces with increased precision by using stability diagrams. Furthermore, the physical transparency of the aerodynamic damping and stiffness terms is increased because the development in vertical and torsional damping and stiffness is analysed instead of flutter derivatives.

KW - Flutter Derivatives

KW - System Identification

KW - Aerodynamic Damping

KW - Aerodynamic Stiffness

M3 - Paper

ER -

Andersen MS, Brandt A. An alternative to the flutter derivatives. 2016. Paper presented at 8th International Colloquium on Bluff Body Aerodynamics and Applications, Boston, United States.