time history result is lower than expected

[jonade]

I have a model that is similar to "http://opensees.berkeley.edu/wiki/index ... ment_Frame" but mine is attached to another concrete frame so it is 3d. I was trying to run time history analysis but the top story displacement I got after the analysis was way lower than what I was expecting. I suspected the link properties so i changed it to rigid link. when it was changed the top story displacement was reasonable but I can't seem to know the reason why the link property should be rigid. My model is 3d so i restrained all directions except rotation in the z-direction, which I assigned a link property for. I would appreciate any help. Thank you

#zero length element
element zeroLength 211221 211 212 -mat $combined -dir 6 -doRayleigh 1 #combined is a steel 02 sample material with yield strength of 10 kn and sitfness 200 GPA
equalDOF 211 212 1 2 3 4 5 #211 and 212 are ends of a column and a beam respectively having the same location

[selimgunay]

If you don't have equaldof, you will have hinges in all dof except the z rotation. So what you have done looks correct

[jonade]

Thank you very much for a quick reply
https://www.dropbox.com/s/1yj8mz2c7kuf4 ... e.jpg?dl=0. Here is a drawing of what i am trying to model. The Frame at the back is my bare frame. And the frame at the front is what i added to improve the seismic performance. The two frames are attached with a reinforced concrete beam. The frame at the front has links connecting the beam with the column. IF this link is just a "rgidLink beam" the top story displacement will be reasonable but if the link property is otherwise the top story displacement is small. When i compare the bare frame top story displacement with the bare frame attached with another frame it is small. Here is a comparison of the bare frame response when compared with the frame attached. https://www.dropbox.com/s/0dp3w9m66lkon ... y.PNG?dl=0

[jonade]

Thanks selimgunay. I have found that the problem was the equal dof order. The master node and the slave node should be in order. The column end should be the master node and the beam end should be the slave node.