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Thank you, silvia.
Yes, the original script in OpenSees Manual 1.7.3:
recorder Element 1 -time -file force.out force

shall be modified to
recorder Element -file force.out -time -ele 1 force

to get it worked.

Commenting recorders made the script works fine. I guess the bug results from OpenSees 1.7.3-1.7.5 nolonger support these recorder output option for truss element.

The file in the example manual Ex9e.build.RCSection.Rect2D.tcl used the following script to define a fiber section. What my question is wouldn't the layer straight command defined two coincident rebars in one single point? For example, the point ( -$coreY $coreZ ) appeared twice in the following scr...

Hello,
I tested the script matTest.tcl provided in the manual on OpenSees1.7.3 but got failed. It couldn't stop running. The script and OpenSees.exe was downloaded from the website without any change. Why does this happen? It is grateful for any reply.

Thank you very much, silvia. Now I got the point.

Hello,
I have a question about zeroLength element. I think it is quite simple but I haven't gotten the idea yet. That is since it is zero length, how was it integrated to displacement from given strain? I will be very greatful if simeone could help me.

Yes, silvia. I can't avoid zero stiffness.

Hello, everyone. Can I set zero stiffness in uniaxial material for shear section to aggregate with fiber section? I have tested this in Example 2. 2D but experiencing convergence problem. The script was posted below. Because the uniaxial material I impelmented for shear section got zero stiffness so...

Thank you fmk. I'll check it out.

Can anyone help me to know how an aggregator works? How was it implemented? I mean what's the basic formulations beyond the section aggregator? Please give me some references, formulations or tell me what is that procedure called so I can find it in textbooks or something? Thank you very much.

Thank u fmk and silvia. I made a mistake opening a wrong file to check the output results. It had already worked after correction following your above suggestions. Thank you very much.

Thank you silvia. Yes, it's my error for that dash. My editor is wordpad. But even I corrected the dash it still cannot work. Very strange... I haven't resolved it.

Thank you very much fmk. But the number "1" I I've put after 0. was referred to $matID. Even though I tried your suggestion deleted the space between 0. and 1 it still not work. Can you give me some more help?

Hi, everyone: I've tested stressStrain recorder on example 3.1. I only add one recorder to record stress-strain relationship but got an empty file. Did I miss something? # OpenSees Example 3.1 # OpenSees Primer # # Units: kips, in, sec # ------------------------------ # Start of model generation # -...

I am trying compiling OpenSees using 2006/07/09 CVS version but always got error C2061: syntax error : identifier 'TCL_Char' although openSees.exe had been successfully compiled. Will there exist any unpredictable problem if I ignore this error and use the compiled openSees.exe? Any suggestion will ...