RigidDiaphagm and convergence error

Forum for OpenSees users to post questions, comments, etc. on the use of the OpenSees interpreter, OpenSees.exe

Moderators: silvia, selimgunay, Moderators

Post Reply
joyww
Posts: 4
Joined: Mon Nov 03, 2008 3:54 pm
Location: Berkeley

RigidDiaphagm and convergence error

Post by joyww »

Hello,

I've set all my elements to elastic to test whether my convergence error was due to connectivity. I think I've narrowed it down to if I take out my RigidDiaphragm at the roof then the gravity loads can be applied with no problem. However, if I apply a rigid diaphragm to my roof then the gravity load can't even get past the first load step! Can someone tell me why? Thanks!!

Joy
silvia
Posts: 3909
Joined: Tue Jan 11, 2005 7:44 am
Location: Degenkolb Engineers
Contact:

Post by silvia »

change the constraint handler.
Silvia Mazzoni, PhD
Structural Consultant
Degenkolb Engineers
235 Montgomery Street, Suite 500
San Francisco, CA. 94104
joyww
Posts: 4
Joined: Mon Nov 03, 2008 3:54 pm
Location: Berkeley

Post by joyww »

Ah yes, I changed it from Lagrange to Transformation and now it works when applying the gravity load. however when I run my pushover load if my system is BandGeneral it tells me i don't have enough memory but then when i change it to UmfPack it tell me Lvalue is too small. Do you know why this is happening? Thanks!!
Post Reply