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Hi Marco,

simply create a .tcl with zerolength element (or whatever element) with your material, load the "free" node and record the force-displacement relationship. Later you can reuse this script for testing of any material (backbone or hysteresis)...

Hi,

why don't you simply create a new "main.tcl", which sources both of your files and then evaluate main.tcl in matlab.

Hi,

please paste your input file. No one can help you, if you don't define the problem. Those errors could be anything...

Hi, I am not sure what exactly is your question, but I usualy connect matlab with opensees in the following way: 1) write and save the tcl input file by matlab... eg. file = fopen('matlabinput.tcl', 'w+'); fprintf(file,'model BasicBuilder -ndm 3 -ndf 6 \n'); fprintf(file,'... fclose(file); 2) run op...

hi,

there must be something wrong with your input code
the fiber section in 2d is indeed oriented as defined in the manual (z axis is mayor). Post your code, and somebody will help you for sure.
you should also check the examples section...

Hi,

there is nothing wrong with your code if you have "enough" nodes...

use puts command inside the for loop to check where is the problem, e.g.

for...
puts "element dispBeamColumn $k $i $j 5 7 2;"

}

and then check if your model has all the nodes you need...

You have only defined 116 nodes, but you want to go till 496 ...

"for {set i 2} { $i < 496 } {incr i 23} {"

You can always output the variables using "puts" command to a text file with an *.m extension, e.g. set a 1; set b 2; set c [expr $a+$b] set file [open matlaboutput.m a] puts file "a=$a;" puts file "b=$b;" puts file "c=$c;" close $file then you can run the "matlaboutput" from matlab... hope that thi...

You can also try using one of the ZeroLengthContact elements:

[url]
http://opensees.berkeley.edu/OpenSees/m ... l/4139.htm
[/url]
[url]
http://opensees.berkeley.edu/cgi-bin/cv ... eroLength/
[/url]

You 're right

there' s a typo, the nominator should be 1153, that is 4000/(145^0.25), instead of only 4000/145.

1 MPa ~ 145 psi

Hi,

the source codes of all versions from 1.0 above are available at developer download section...

Hi, sorry for late response, I am quite sure, that "Clough" material, implemented in OpenSees, is actually the Ibarra model Copy pasted from PEER report: "Altoontash (2004) implemented this model into OpenSees (2006) as a material model that is accessed through the “Clough” material model command. N...

to: yfeng [quote] 1. Displacement data is always stored one on each line in displ.txt. After we read the $fl into data, do we still need to split it on newlines? [/quote] This is just a precaution - I only tried to give the example, but i think it's necessary. The same goes to your question 2. Since...

Hi, on the other hand you can also modify the static reversed cyclic analysis (example 4 - 2D file: Ex4.Portal2D.analyze.Static.Cycle.tcl) in the above example file the cyclic load is generated automaticaly, but you can read $iDmax from a file: eg: (read displacements from a file disp.txt set stepI ...

I have just noticed the line:


integrator LoadControl 0 1 0 0


You want your load factor to be 0, so your forces are all zero...

Simply use

integrator LoadControl 1

if you want to apply the load in one single step...