*HEADING
-- Extension, inflation, torsion. Incompressible Mooney_Rivlin Material
Reference Solution Section 3.4, Theoretical Elastictiy by Green and Zerna
*PREPRINT,ECHO=YES,HISTORY=YES,MODEL=YES
*RESTART,WRITE
*NODE
 1, 1.0, 0.0
 2, 3.0, 0.0
 3, 3.0, 5.0
 4, 1.0, 5.0
5,2.,0
6,3,2.5
7,2.,5
8,1,2.5
*ELEMENT,TYPE=CGAX8H, ELSET=EALL
 1, 1,2,3,4,5,6,7,8
*SOLID SECTION,MATERIAL=A1, ELSET=EALL
*ORIENTATION,NAME=OR1,DEFINITION=NODES
2,3
*surface,NAME=SIDE
1,S3
*MATERIAL,NAME=A1
***HYPERELASTIC,OGDE
**2.0,2,0.5,-2
*HYPERELASTIC,N=1
80.,20.
*NSET,NSET=BOT
1,2,5
*NSET,NSET=SIDE1
1,8,4
*NSET,NSET=SIDE2
2,6,3
*NSET,NSET=TOP
4,7,3
*STEP,NLGEOM,INC=30
*STATIC
0.1,1.0
*BOUNDARY
BOT,2,6
SIDE1,1,1,-0.1
SIDE2,1,1,-0.1
*NODE PRINT
 U,
RF, 
*EL PRINT,F=0
*SECTION PRINT,NAME=SIDE1,SURFACE=SIDE,AXES=LOCAL
4,
3,,,1,
SOCF,SOM
SOAREA,SOF
*END STEP
*STEP,NLGEOM,INC=30
*STATIC
0.1,1.0
*BOUNDARY
TOP,5,5,1.0
*NODE PRINT
 U,
RF, 
*EL PRINT,F=0
*SECTION PRINT,NAME=SIDE1,SURFACE=SIDE,AXES=LOCAL
4,
3,,,1,
SOCF,SOM
SOAREA,SOF
*OUTPUT,FIELD
*NODE OUTPUT
U,
*END STEP