truss model

[eroz]

Getting a singular matrix error with the following. Any help appreciated. Happy holidays.

p.s. making it -ndf 2 does not work either
________________________________________________________
model BasicBuilder -ndm 2 -ndf 3

node 1 0 0
node 2 360 0
node 3 180 156

fix 1 1 1 0
fix 2 1 1 0

geomTransf Linear 1

uniaxialMaterial Steel01 1 36 45595 0.2

element truss 1 1 3 9 1
element truss 2 3 2 9 1

recorder Node d3.xls disp -node 3 -dof 1

pattern Plain 1 "Linear" {
load 3 10.0 0.0 0.0
}
constraints Plain
numberer RCM
system UmfPack
test NormDispIncr 1.0e-4 10
algorithm Newton
integrator LoadControl 1
analysis Static
analyze 1

[liwei]

I have changed the node number ,and used a new Material. It works!
In your script , there are a few questions.

model BasicBuilder -ndm 2 -ndf 2

node 1 0 0
node 2 180 156
node 3 360 0

fix 1 1 1

fix 3 1 1

#geomTransf Linear 1

#uniaxialMaterial Steel01 1 36 45595 0.2.
uniaxialMaterial Elastic 1 45595

element truss 1 1 2 9 1
element truss 2 2 3 9 1


recorder Node -file node2.out -time -node 2 -dof 1 disp

pattern Plain 1 Linear {
load 2 10.0 0.0 0.0
}


integrator LoadControl 1 1 1 1
test NormDispIncr 1.0e-06 10 0
algorithm Newton
numberer RCM
constraints Transformation
system ProfileSPD
analysis Static

analyze 1

[eroz]

Thank you, this has solved the problem.