I can't solve errors

[Hidemasa KAIHARA]

Dear all,

I am trying frame pushover analysis, but errors occured.
I can't solve this problem in spite of many trials.
Teach me the solvent of this problem, please.
My model is below.

# Units: Length[mm], Mass[kg], Time[sec], Angle[rad],Force[N]
wipe
file mkdir case2
model basic -ndm 2 -ndf 3

# Nodes
node 1 0 0
node 3 4500 0
node 5 0 2925
node 6 0 2925
node 7 1800 2925
node 8 3600 2925
node 9 3600 2925
node 10 4500 2925
node 11 4500 2925
node 12 0 3510
node 13 1800 3510
node 14 3600 3510
node 15 0 5265
node 16 1800 5265
node 17 3600 5265
node 18 0 5850
node 19 0 5850
node 20 1800 5850
node 21 3600 5850
node 22 3600 5850
node 23 4500 5850
node 24 4500 5850

# Boundary Conditions
fix 1 1 1 0
fix 3 1 1 0

# Materials
uniaxialMaterial ElasticPP 1 100000000 0.014
uniaxialMaterial ElasticPPGap 2 90000000 1280000 0.014
uniaxialMaterial Parallel 3 1 2

# Rotational Spring
element zeroLength 1 5 6 -mat 3 -dir 6
element zeroLength 2 10 11 -mat 3 -dir 6
element zeroLength 3 18 19 -mat 3 -dir 6
element zeroLength 4 23 24 -mat 3 -dir 6
element zeroLength 5 8 9 -mat 3 -dir 6
element zeroLength 6 21 22 -mat 3 -dir 6
equalDOF 5 6 1 2
equalDOF 10 11 1 2
equalDOF 18 19 1 2
equalDOF 23 24 1 2
equalDOF 8 9 1 2
equalDOF 21 22 1 2

geomTransf Linear 1

# Elements
element elasticBeamColumn 11 1 5 14400 10000 17280000 1
element elasticBeamColumn 12 5 12 14400 10000 17280000 1
element elasticBeamColumn 13 12 15 14400 10000 17280000 1
element elasticBeamColumn 14 15 18 14400 10000 17280000 1
element elasticBeamColumn 15 3 11 14400 10000 17280000 1
element elasticBeamColumn 16 11 23 14400 10000 17280000 1
element elasticBeamColumn 17 9 14 14400 10000 17280000 1
element elasticBeamColumn 18 14 17 14400 10000 17280000 1
element elasticBeamColumn 19 17 21 14400 10000 17280000 1
element elasticBeamColumn 20 6 7 43200 10000 466560000 1
element elasticBeamColumn 21 7 8 43200 10000 466560000 1
element elasticBeamColumn 22 8 10 43200 10000 466560000 1
element elasticBeamColumn 23 19 20 18000 10000 33750000 1
element elasticBeamColumn 24 20 22 18000 10000 33750000 1

# Recorders
recorder Node -file case2/Displacements.txt -time -dof 1 2 3 disp

pattern Plain 1 Linear {
load 19 50000 0 0
}


constraints Plain
numberer Plain
system BandGeneral
test NormDispIncr 1e-10 10
algorithm Newton
integrator DisplacementControl 19 1 1
analysis Static
analyze 100

[vesna]

Let's first fix your model and then we will work on analysis part. There is something wrong with your model. To see how your model looks like you can use display command. In this example you can find explanation of display command:
http://opensees.berkeley.edu/wiki/index ... ode_shapes

Also make sure you have enough constraints.

[Hidemasa KAIHARA]

Thank you for you reply.

I tried to fix my model like your advise.
I deleted node 13 and 16, which is not used. Then analysis was successful.

Your advise was very useful to solve this problem.