Flutter Analysis using Elmer

Numerical methods and mathematical models of Elmer
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JamesMarine
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Flutter Analysis using Elmer

Post by JamesMarine »

I am trying to swith from NASTRAN to elmer regarding structure analysis. I am wondering whether Elmer is capable of carrying out flutter analysis of aero-structures.

Is there any materials that I can refer to for this kind of analysis?
raback
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Re: Flutter Analysis using Elmer

Post by raback »

Hi

Flutter is certainly not something that at least Elmer team has studied. Maybe you could specify what the equations are that need to be solved. Flutter seems to hold various models under the topic.

-Peter
kevinarden
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Re: Flutter Analysis using Elmer

Post by kevinarden »

https://en.wikipedia.org/wiki/Aeroelasticity
https://www.euroturbo.eu/paper/ETC2019-199.pdf

Because NASTRAN was developed by NASA there was focus on providing more coding and solutions to aid in analyzing flutter of aero-elastic structures. However physically it is the full coupling between fluid flow and structural response. Elmer can do fluid flow coupled with structural response steady state or transient, but I think NASTRAN focuses on the structural response only. Similar to a response spectrum, forced vibration response, etc., which I have not seen any of these types of analyses in Elmer. Coupling CFD/loads with modal solutions instead of transient.

This paper used CalculiX which is an open source structural mechanics package.
https://core.ac.uk/download/pdf/11146495.pdf
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