*heading
uinternx: Testing normal direction behavior only
*preprint,echo=yes,model=yes,history=yes,contact=yes
*node
1, 0.0, 0.0
2, 1.0, 0.0
3, 1.0, 1.0
4, 0.0, 1.0
999, 0.0,0.0
*element, type=cpe4, elset=eall
1, 1,2,3,4
*solid section, elset=eall, material=mat1
1.0, 
*material, name=mat1
*elastic
1.D10, 0.3
*surface, type=element,name=sl1
1, s1
*surface, type=segments, name=mas1
start, -1.0, -0.02
line, 2.0, -0.02
*rigid body, analytical surface=mas1, ref node=999
*contact pair, interaction=int
sl1, mas1
*surface interaction, name=int, user, properties=1
1.0, 
1.D11, 
*boundary
999, 1, 2
999, 6, 6
3, 1, 2
4, 2, 2
*step
*static
0.1, 1.0
*boundary
999, 2, 2, 0.03
*el print
s,
e,
*node print
u,
rf,
*print,contact=yes
*contact print
cstress,
cdisp,
*el file,freq=100
s, 
e, 
*node file,freq=100
u,
rf,
*contact file,freq=100
cstress,
cdisp,
*output,history,freq=0
*output,field,freq=0
*end step