Optistruct stucked on linear analysis

Hi,

I happened to run a linear static analysis on a model. Everything worked fine.

After that I had to rerun the same analysis on the same model BUT I had to add on EVERY NODE of the model an acceleration of about 10g using the card ACCEL1.

The analysis got stucked after few minutes on the same screen. It has been like that since several hours.

I don't know what it is...it's just as the solver got...stucked.

Does anyone has an idea of why this is happening?

I will now upload the .stat and the .out files, should there be some more informations, let me know.

Best Regards

Matteo

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Altair Forum User

Hi @Matteo

Can you try with GRAV card instead of ACCEL1?

Altair Forum User

Hi Prakash,

Tried as you said, it runs smoothly!
I took a look at the .fem file. It had a huge number of ACCEL1 cards. I think that Optistruct might experience problems dealing with them all. Is this correct?
One last thing...what is the SPASMB section?

Thank you for the fast and accurate reply
Matteo

Altair Forum User

Hi @Matteo

Is it possible to share the file with the ACCEL1 card?

Please use the file transfer link in my signature to share the model file

Altair Forum User

Hi Prakash,

Can I upload it without the GRID cards attached? Unfortunately it would be better if the geometry of the model doesn't get shared.

OK, thanks

Uploaded

Got it, thank you /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20'>