*HEADING
 ANNULAR RING UNDER APPLIED TWIST ON INNER AND OUTER SURFACES
 ELEMENT : CGAX8H
 MATERIAL : INCOMPRESSIBLE HYPERELASTIC (NEO-HOOKEAN)
*RESTART, WRITE
*NODE
1, 1.0, 0.0
21, 2.0, 0.0
1021, 2.0, 1.0
1001, 1.0, 1.0
*NGEN, NSET=INNER
1, 1001, 100
*NGEN, NSET=OUTER
21,1021, 100
*NFILL, NSET=ALL
INNER, OUTER, 20, 1
*NSET,NSET=BOTTOM,GENERATE
1, 21
*ELEMENT, TYPE=CGAX8H, ELSET=EALL
1,1,3,203,201,2,103,202,101
*ELGEN, ELSET=EALL
1, 10, 2, 1, 5, 200, 10
*SOLID SECTION, ELSET=EALL, MATERIAL=MALL
*MATERIAL, NAME=MALL
*HYPERELASTIC,N=1
1.66666667E5,
*BOUNDARY
BOTTOM,1,2
*STEP,NLGEOM
*STATIC
0.5, 1.0
*BOUNDARY
INNER, 5,5, 0.01
OUTER, 5,5, -0.01
*EL PRINT, ELSET=EALL
S, MISES
E,
COORD,E13,S13
*EL PRINT, ELSET=EALL, POSITION=AVERAGED AT NODES
E13, S13
*NODE PRINT
U,
*NODE PRINT, NSET=OUTER,TOTALS=YES
RF, 
*NODE PRINT, NSET=INNER,TOTALS=YES
RF, 
*EL FILE
S,
E,
COORD,
*OUTPUT,FIELD
*ELEMENT OUTPUT
S,
E,
COORD,
*NODE FILE
U,
RF, 
*OUTPUT,FIELD
*NODE OUTPUT
U,
RF,
*END STEP