the problem of BarSlip material application

cvjchuang · Post by **cvjchuang** » Fri Mar 13, 2009 4:27 am

Dear All
i am using BarSlip material to simulating bon-slip effect of steel at the botton of column.
the material script is following:
uniaxialMaterial BarSlip 5 31.8 380 1.8e+5 577.3 1.8e+3 14 250 6 150 300 1 "Strong" "column" "Damage" "MPa"
but when i was running the opensees show that :
Warning:insufficient arguments
uniaxialMaterial BarSlip 5 31.8 380 1.8e+5 577.3 1.8e+3 14 250 6 150 300 1 "Strong" "column" "Damage" "MPa"
Want:uniaxialMaterial BarSlip tag? fc? fy? ......
whether is this material have problem?
thanks for all reply!

silvia · Post by **silvia** » Fri Mar 13, 2009 5:22 am

in your input do you go to the next line?

when it says Want:uniaxialMaterial BarSlip tag? fc? fy? ......
did you count those elements?

cvjchuang · Post by **cvjchuang** » Fri Mar 13, 2009 6:10 am

Dear Silvia
Thanks for your reply!
now ,i have modifed BarSlip material arguments that as follows:
uniaxialMaterial BarSlip 5 31.8 380 180000 577.3 1800.0 14.0 250.0 6 150.0 300.0 Strong column
Comparising with earlier puts form,i cancel three arguments :$ancLratio,$damage and $unit.
the results that procedures can run perfectly.
so is the software procedures have problem?

silvia · Post by **silvia** » Fri Mar 13, 2009 6:20 am

i'll look into it.
it is a contributed material, so i don't know much about it, yet.

cvjchuang · Post by **cvjchuang** » Sat Mar 14, 2009 1:21 am

Dear silver
i have a question to ask you! In BarSlip material,the "$ld"
arguments represents what? Is it represents the bars' anchorage length?

silvia · Post by **silvia** » Sat Mar 14, 2009 8:33 am

the user manual has all that information.

cvjchuang · Post by **cvjchuang** » Sat Mar 14, 2009 5:57 pm

but,I don't clearly understand what's the $ld mean.
is it represents bars' slip length in fy?

silvia · Post by **silvia** » Sat Mar 14, 2009 7:04 pm

"floating point value defining the development length of the reinforcing steel"

it is the embedment length.

crazydiamond · Post by **crazydiamond** » Fri Apr 15, 2011 3:32 am

I searched in the source code and the correct string are: damage1 or damage2 or nodamage.
i tried it and it work!!
damage1 for linear damage
damage2 for logarithmic damage

sadaf_rkh · Post by **sadaf_rkh** » Sat May 19, 2012 2:16 am

is it necessary that the unit we define in the uniaxialMaterial BarSlip code similar to the codes we wrote before?

vesna · Post by **vesna** » Mon May 21, 2012 8:38 am

For the same model you need to use the same units everywhere. For example, if you defined the barslip material in "ksi" then the rest of your model needs to use the same basic units: kip, in.

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