RSA2011 problem:drift ratio is zero

[mecheil2000]

edward,

assign dynamic mass ( x,y ) in define analysis parameters. try again. it will work.

The problem with Rigid diaphragm
Thank you for your helping
See my post also in this link
http://forums.augi.com/showthread.ph...10#post1092710

[iassoniako572844]

Ι have the same problem. I made a concrete cylinder model and i take reults such as -0,111 mm max Uz, and with elasticity E1=E/2 (creep) -0,244 mm. Something imposible i believe that can exist.
I will made the same model with SAP2000 and i will come with results.

Another solution is to put a displacement in the model manually. Loads-> Load Definitions->Bar->Displacements. I put a value about 0,5m (-Z) in order to see what will happen with Moments after a collapse.