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?
Flutter Analysis using Elmer
-
- Site Admin
- Posts: 4812
- Joined: 22 Aug 2009, 11:57
- Antispam: Yes
- Location: Espoo, Finland
- Contact:
Re: Flutter Analysis using Elmer
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
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
-
- Posts: 2237
- Joined: 25 Jan 2019, 01:28
- Antispam: Yes
Re: Flutter Analysis using Elmer
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
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