Two Node Link Element Error !

[AryanRZRD]

in Opensees Wiki Definition , it has been specified that "DOF = 6" related to rotation about Local Z axis.
when i assign the specific Material For this rotational Direction in 2D Space it gives me error !!
why ? !!
for example :

"
# ndm 2 and dof 3

uniaxialMaterial KikuchiAikenLRB 1 1 [expr 1.38464*0.175179939] 0.172423804766775 0.385e06 [expr 1.38464*0.004988753646] 7.967e6 0.583e6 13.0
uniaxialMaterial AxialSp 2 2.e10 1e6 -100e6 1.00 0.01 0.50 0
uniaxialMaterial Elastic 3 2.e10

element twoNodeLink 1 1 2 -mat 2 1 3 -dir 1 2 6 -pDelta 0.5 0.5"

[AryanRZRD]

Here is The Code :
wipe

file mkdir KIKUCHIparallel

model BasicBuilder -ndm 2 -ndf 3

node 1 0. 0.
node 2 0. 0.336723805

node 3 0.05 0.
node 4 0.05 0.336723805

node 5 -0.05 0.
node 6 -0.05 0.336723805

fix 1 1 1 1
fix 3 1 1 1
fix 5 1 1 1

geomTransf Linear 1

uniaxialMaterial KikuchiAikenLRB 1 1 [expr 1.38464*0.175179939] 0.172423804766775 0.385e06 [expr 1.38464*0.004988753646] 7.967e6 0.583e6 13.0
uniaxialMaterial AxialSp 2 2.e10 1e6 -100e6 1.00 0.01 0.50 0
uniaxialMaterial Elastic 3 2.e10

set A 1.e10


element twoNodeLink 1 2 1 -mat 1 2 3 -dir 1 2 6 -pDelta 0.5 0.5

element twoNodeLink 2 4 3 -mat 1 2 3 -dir 1 2 6 -pDelta 0.5 0.5

element twoNodeLink 3 6 5 -mat 1 2 3 -dir 1 2 6 -pDelta 0.5 0.5

element truss 4 2 4 $A 1

element truss 5 2 6 $A 1


recorder Node -file KIKUCHIparallel/nodedisp.out -node 2 -dof 1 disp
recorder Node -file KIKUCHIparallel/nodeForce.out -node 1 -dof 1 reaction

mass 2 79145.0 1.e-09 0.
mass 4 79145.0 1.e-09 0.
mass 6 79145.0 1.e-09 0.

puts "[eigen 1]"

puts "First Eigen Value is: [eigen 1]
First Mode Period is: [expr 2*3.1415/pow([eigen 1],0.5)]"