*HEADING
  - INCOMPRESSIBLE HYPERELASTICITY (POLYNOMIAL), PLANAR TENSION
*NODE,NSET=ALL
1,
2,1.
3,1.,1.,
4,0.,1.,
5,0.,0.,1.
6,1.,0.,1.
7,1.,1.,1.
8,0.,1.,1.
*NSET,NSET="Face=1"
1,2,3,4
*NSET,NSET="Face=2"
5,6,7,8
*NSET,NSET="Face=3"
1,2,5,6
*NSET,NSET="Face=4"
2,3,6,7
*NSET,NSET="Face=5"
3,4,7,8
*NSET,NSET="Face=6"
4,1,8,5
*ELEMENT,TYPE=C3D8RH,ELSET=ONE-ELEMENT
1,1,2,3,4,5,6,7,8
*SOLID SECTION,ELSET=ONE-ELEMENT,MATERIAL=POLY
*MATERIAL,NAME=POLY
*HYPERELASTIC,N=1
 80., 20.,
*STEP,NLGEOM,INC=20
PLANAR TENSION
*STATIC,DIRECT
1.,20.
*BOUNDARY,OP=NEW
"Face=1",3
"Face=3",2
"Face=5",2
"Face=6",1
"Face=4",1,1,5.
*EL PRINT,F=10
S, 
E, 
*NODE PRINT,F=10
U,RF
*OUTPUT,FIELD,FREQ=10
*ELEMENT OUTPUT
S,E
*OUTPUT,FIELD,FREQ=10
*NODE OUTPUT
U,RF
*END STEP