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I load and unload by displacement control. I have checked the displacement at zero load to be non-zero. I have used the material Concrete02 which may be the reason for getting such response. Can you suggest me a material so that the pushing the structure after unloading will not follow the same path...

I am trying to do a set of pushover analysis. So I want to push a structure till a certain drift and then unload it till zero load and finally do another pushover from that zero load point. So for this I am running three pushover analysis one after another. It is working fine till the zero load poin...

Please help me in this regard.

Thanks in advance.

What do you mean by do stuff? What stuff i should the doing to run the analysis? Please help me.. I am stuck. I have increased the number of steps to 1000 and it still doesn't work.

Hi, I was trying to run a cyclic pushover analysis followed by a time history analysis. The cyclic pushover and the time history analysis script was working fine individually, however, as I was running the cyclic pushover one followed by the time history analysis, the program was terminated only aft...

Hi All, I want to push a structure till certain drift and then unload the structure till zero load. I am using the following script. # assign lateral loads and create load pattern set lat1 0.33; # force on each frame node in Floor 1 set lat2 0.66; # force on each frame node in Floor 2 set lat3 1.00;...

I want to do a pushover analysis till a certain drift and then I want to unload the structure till zero load. I have already done the pushover analysis but I can not figure out how to unload the structure till zero load after the structure is pushed to a certain drift level. Can anyone help me in th...

I am getting an error while running the unload part... wrong # args: should be for "start test next command" while executing for {set i 0; $i<$numStep; incr i 1} { analyze 1 Is the unload part related to the pushover part. I am using my own code for pushover analysis but not able to unload...

Hi,

I want to do a pushover analysis upto a certain drift level. After that I want to unload the structure till zero load and do eigen value analysis at that point. Can anyone suggest me the procedure to do this analysis.

Thank you,
Supratik.

Hi All, I need a help regarding OpenSees. I am doing a pushover analysis of a three story building. The pushover analysis is OK when I am using dispBeamColumn element. But I want to use nonlinearBeamColumn element and am having convergence issue with these element. The error message is CTestNormUnba...