Why my opensees cannot read the file containing the load factors values correctly when I use it to do a quasi-static ana

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jinyuanlee
Posts: 2
Joined: Wed Feb 23, 2022 1:29 am

Why my opensees cannot read the file containing the load factors values correctly when I use it to do a quasi-static ana

Post by jinyuanlee » Wed Feb 23, 2022 2:50 am

Why my opensees cannot read the file containing the load factors values correctly when I use it to do a quasi-static analysis of a column? The results after the run are empty? :?
Is it that the command not written right?
#timeSeries Path 1 -dt 0.1 -filePath jiazai.txt
Here is the modelling code for a certain column, but I cannot obtain a correct results:
#
model basic -ndm 2 -ndf 3

node 1 0 0
node 3 0 250
node 4 0 500
node 2 0 750


fix 1 1 1 1


uniaxialMaterial Concrete02 4 -29.39 -0.0025 -10.36 -0.015 0.1 2.8 3000
uniaxialMaterial Concrete02 3 -24.49 -0.002 -8.11 -0.005 0.1 2.4 3000
uniaxialMaterial Steel02 1 582 289850 0.0033 16 0.925 0.15

section Fiber 1 {
patch rect 4 8 8 -80 -80 80 80
patch rect 3 10 1 -100 80 100 100
patch rect 3 10 1 -100 -100 100 -80
patch rect 3 1 8 -100 -80 -80 80
patch rect 3 1 8 80 -80 100 80
layer straight 1 3 50.24 -80 80 80 80
layer straight 1 2 50.24 -80 0 80 0
layer straight 1 3 50.24 -80 -80 80 -80
}

geomTransf PDelta 1

element dispBeamColumn 1 1 3 3 1 1
element dispBeamColumn 2 3 4 3 1 1
element dispBeamColumn 3 4 2 3 1 1

recorder Node -file 06.txt -time -node 2 -dof 1 disp
recorder Node -file 16.txt -time -node 2 -dof 1 reaction

pattern Plain 1 Linear {
load 2 0 -140780 0
}

constraints Plain
numberer RCM
system BandGeneral
test NormDispIncr 1.0e-8 100 2
algorithm Newton
integrator LoadControl 1
analysis Static
analyze 1
loadConst 0.0

timeSeries Path 1 -dt 0.1 -filePath jiazai.txt

pattern Plain 2 1 {
sp 2 1 1
}

constraints Penalty 1e20 1e20
numberer RCM
system BandGeneral
test NormDispIncr 1.0e-8 1000 2
algorithm KrylovNewton
integrator LoadControl 0.1
analysis Static
analyze 4763
#

mhscott
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Joined: Tue Jul 06, 2004 3:38 pm
Location: Corvallis, Oregon USA
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Re: Why my opensees cannot read the file containing the load factors values correctly when I use it to do a quasi-static

Post by mhscott » Fri Feb 25, 2022 6:45 am

What is the output from the analysis? Does the analysis converge or does the analysis fail?

Your penalty numbers are way too large. Try transformation constraints. What are the contents of the jiazai.txt file?

jinyuanlee
Posts: 2
Joined: Wed Feb 23, 2022 1:29 am

Re: Why my opensees cannot read the file containing the load factors values correctly when I use it to do a quasi-static

Post by jinyuanlee » Mon Feb 28, 2022 2:29 am

the results of analysis were analyzed successfully, but the output contents in 06.txt and 16.txt were showed with 0.
the contents of jiazai.txt are as follows:
####
0
0
0
0
0.004
-0.004
0.004
0
-0.004
0

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