Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Running Buckling in Femap using ASET
- Thread starter nuraen
- Start date
SWComposites
Aerospace
have you read the FEMAP manual?
what is the specific issue?
what is the specific issue?
- Thread starter
- #3
I got a FATAL after an attempt at running a model.
I ran a static model, modified the .DAT file for buckling, added statsubs and method to all the subcases; added the EIGRL card, created a new constraint group (fixing all 6dof) and used the group to create ASET bdf.
Is fixing the 6dof appropriate? If yes, what could be source of the singularity FATAL I am getting?
I ran a static model, modified the .DAT file for buckling, added statsubs and method to all the subcases; added the EIGRL card, created a new constraint group (fixing all 6dof) and used the group to create ASET bdf.
Is fixing the 6dof appropriate? If yes, what could be source of the singularity FATAL I am getting?
you should post in the FEMAP forum. There are some very knowledgeable people there.
I use FEMAP, but can't help with your question.
have you tried the help desk ? they can be surprisingly helpful (at times).
"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.
I use FEMAP, but can't help with your question.
have you tried the help desk ? they can be surprisingly helpful (at times).
"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.
SWComposites
Aerospace
Why are you manually modifying the DAT file?
From what I recall from using FEMAP years ago, you can launch a Nastran Sol 105 buckling analysis from within FEMAP, the same way a static SOL 101 is launched.
And you should not need to change the boundary conditions.
I would try to sort out the analysis procedure using one load case with a simple loading before trying to do it with multiple load cases, etc.
Have you plotted the static analysis displacement results? is the displacement appropriate/reasonable/expected? Can you plot some images here?
Yes, posting in the FEMAP or FEA forums (not both) may get you more help.
From what I recall from using FEMAP years ago, you can launch a Nastran Sol 105 buckling analysis from within FEMAP, the same way a static SOL 101 is launched.
And you should not need to change the boundary conditions.
I would try to sort out the analysis procedure using one load case with a simple loading before trying to do it with multiple load cases, etc.
Have you plotted the static analysis displacement results? is the displacement appropriate/reasonable/expected? Can you plot some images here?
Yes, posting in the FEMAP or FEA forums (not both) may get you more help.
- Status
Similar threads
- Locked
- Question
- Question
- Locked
- Question
- Locked
- Question
