**
**   Structure: two cubes on top of each other.
**   Test objective: quadratic elements; Mortar contact.
**
*NODE, NSET=Nall
*ELEMENT, TYPE=C3D20, ELSET=Eall
*NSET,NSET=Nfix
*BOUNDARY
Nfix,1,3
*NSET,NSET=Nfix2
*BOUNDARY
Nfix2,1,2
*NSET,NSET=Nslav
*SURFACE,NAME=Sslav
2, S3
*SURFACE,NAME=Smast
1, S5
*CONTACT PAIR,INTERACTION=SI1,TYPE=MORTAR
Sslav,Smast
*SURFACE INTERACTION,NAME=SI1
*SURFACE BEHAVIOR,PRESSURE-OVERCLOSURE=LINEAR
1.E7
*MATERIAL,NAME=EL
*ELASTIC
210000.,.0
*SOLID SECTION,ELSET=Eall,MATERIAL=EL
*STEP,NLGEOM
*STATIC
.5,1.
*DLOAD
2, P5, 100.000000
*NODE PRINT,NSET=Nall,FREQUENCY=10
U
*NODE FILE
U
*EL FILE
S,E
*CONTACT FILE
CPRESS
*END STEP