Combining the Plain Pattern and UniforExcitation Pattern

ionwang · Post by **ionwang** » Wed Mar 25, 2009 7:52 am

Hello,

I want to analyze the structural model under earthquake and another time-variant series(unknowed in priori), but I don't know how to Combining the Plain Pattern and UniforExcitation Pattern. These two kinds of loads should work simultaneously. Does OpenSees support this case?

Thank you in advance!

Post by **fmk** » Wed Mar 25, 2009 10:07 am

YES .. all load patterns that are present in the domain at the time of the analysis are included in the analysis.

ionwang · Post by **ionwang** » Wed Mar 25, 2009 1:38 pm

Thank you very much! I have passed this problem.

However, another problem comes out. The "nodeDisp" command can get the displacement or rotation at specified node. Does OpenSees have this kind of command returning the velocity at specified node? such as "nodeVel"... The node recorder can not deal this problem very well.

If the OpenSees does not this kind of command, could you give me the source code of "nodeDisp"? I can't find it in the SRC directory.

silvia · Post by **silvia** » Wed Mar 25, 2009 7:25 pm

look at the updates for the latest version of opensees, i think it does.

ionwang · Post by **ionwang** » Wed Mar 25, 2009 8:43 pm

Hi Silvia,

I'm sorry I don't know how to find the updates for the latest version of OpenSees. Could you tell me? By the way, where can i find the new command list and help document?

Thank you very much!

ionwang · Post by **ionwang** » Thu Mar 26, 2009 10:48 am

I have not find this kind of command yet.
Does anybody know this?

Post by **fmk** » Thu Mar 26, 2009 12:31 pm

they are
nodeDisp nodeTag? <dofTag?
nodeVel nodeTag? <dofTag?>
nodeAccel nodeTag <dofTag?>

the dofTag is optional, if not specified all are returned.

ionwang · Post by **ionwang** » Thu Mar 26, 2009 3:31 pm

Thank you very much!