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FLUTTER 1

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Pshell90

Aerospace
Aug 11, 2012
18
Hi guys!

I'm working on flutter phenomena. Does anyone know anything about that ?! I have a big problem with that !!
 
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I'm pretty sure that the best place to start is the author's preface.
 
flutter is divergent aeroelastic. surely you can get some hits in google with some obivous search terms ... like "flutter" ...
 
Thank you guys !!

Is there anyone here who has ever made a flutter model in PATRAN/NASTRAN ?!
 
starting at post #1, going directly onto post #2 is IMHO pretty dangerous. I'd suggest some pretty heavy "book hitting" before proceeding onto modelling in NASTRAN (or any other code !).

what are you looking at ? a wing, and empennage, an antenna ?
 
Starter material...

search for ADA328059
WL-TR-96-3111
Flutter Prevention Handbook: A Preliminary Collection.

Regards, Wil Taylor

Trust - But Verify!

We believe to be true what we prefer to be true.

For those who believe, no proof is required; for those who cannot believe, no proof is possible.
 
Thanks guys !! your suggestion was really helpful !!

I just wanna model a simple sandwich beam & then evaluate its flutter velocity !

Here I faced to 2 problems :

1. How can I evaluate the other modes for my beam ? because I think that NASTRAN/PATRAN just check the 1st mode for flutter,doesn't it ?! Please let me know if I'm wrong !

2. Which mode does flutter usually happen in sandwich beams in ?

I really got confused !!! Please help me !!!

Thank you all in advance.[glasses]
 
Are you sure you mean flutter? Or do you mean vibration/natural frequency or some such?

For use of a specific computer package you may want to find the relevant forum, should be able to get there from below link.


Posting guidelines faq731-376 (probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484
 
Yes !! I'm sure. That's flutter and flutter velocity & frequency .

I want to model it in PATRAN/ NASTRAN!
 
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