time history analysis

[robab]

Hi
I modeled a concrete 2D frame in opensees and define masses and gravity loads and static analysis for gravity loads, ofter static analysis, I perform the nonlinear time history analysis but this analyze stopped in 6 second but when I deleted the gravity loads the time history analyses complete. what is the problem ?
thanks

[vesna]

Most probably you need to do the analysis in a loop to overcome the problem you have. Here is an example:
http://opensees.berkeley.edu/wiki/index ... e_Analysis