Big model :Ran out of meory

[pp_0928]

Hi All

I have 3D 20 story moment frame. And I have lots of pins. The way I model pin is defining two note in the same location. And use zero length element to connect these two points. Direction 1 2 3 4 strong material, direction 5 and 6 very small stiffness.
(PS: I try to use EqualDOF to model the pins, but it looks just wrong, beam is floating and doesn't connect with column, when the model is being pushed.)

Then, When I run a pushover analysis, I have following error message:
"WARNING BandGenLinSOE::BandGenLinSOE : ran out of memory for A (size,super,sub) (11872, 11814, 11814) "
"WARNING ArpackSOE::ArpackSOE: ArpackSOE: - LinearSOE - failed in setSize"

In the system I already try all of the options (including Umpack), it still gives me the same error message. Is it a way to solve the big model or we have a simply way to model pins. (Because the model doesn't have pins, the analysis is just OK)

Best,

Peng

[baozai]

If you didn't use pins, and just establishthe model as a moment frame, will the error appear?

[vesna]

I looked at the code you sent me and your model has several issues:

1. rigidDiaphragm was not defined well
2. equalDOF command was not defined well (master and slave node usually switched and you had to constrain one more dof)
3. Most importantly, your constraint handler was Transformation which does not work when you make a slave node of one constraint to be the master of the other constraint. I switched it to Lagrange to make it work.

I sent you the corrected file.