Which types of "forces" does an ElementRecorder re

divamva · Post by **divamva** » Mon Jun 07, 2010 11:07 am

In the following post, there has been some discussion on this issue and it seems that the answer may be element-type-dependent.

(opensees.berkeley.edu/community/viewtopic.php?t=16477)

So, if possible (Frank?) could you tell me what is included by an ElementRecorder for a force-based beam-column element? If inertia and/or damping effects are included, is there any way to remove them, short of modifying the OpenSees source code?

Post by **fmk** » Mon Jun 07, 2010 4:32 pm

the element does not include any inertia or damping forces when the 'forces' are asked for.

divamva · Post by **divamva** » Tue Jun 08, 2010 12:29 am

Thanks Frank
I am guessing that by "forces" you refer to the newer 2.2.0 commands and it corresponds to "globalforces". In that case, does "localforces" work in the same way? Finally, how about the older versions (pre 2.0.0)? I am postprocessing some results derived with such a version and some of them are produced by globalforce and localforce. Is damping included there?

Thanks again.

Post by **fmk** » Tue Jun 08, 2010 2:46 pm

sorry i was looking directly at the source code .. forces and globalForces return the same thing .. damping is not included, never has been.

divamva · Post by **divamva** » Wed Jun 09, 2010 8:25 am

So damping is not included even for LocalForces, right?

Post by **fmk** » Wed Jun 09, 2010 11:13 am

correct.

divamva · Post by **divamva** » Wed Jun 09, 2010 11:34 am

You are the best! Thanks again.