*HEADING
  - INCOMPRESSIBLE HYPERELASTICITY (YEOH), PLANAR TENSION
*PREPRINT,MODEL=YES
*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=FACE1
1,2,3,4
*NSET,NSET=FACE2
5,6,7,8
*NSET,NSET=FACE3
1,2,5,6
*NSET,NSET=FACE4
2
*NSET,NSET=FACE42
3,6,7
*NSET,NSET=FACE5
3
*NSET,NSET=FACE52
4,7,8
*NSET,NSET=FACE6
4,1,8,5
*EQUATION
** Since the S11 output is Cauchy or true stress, we need to
** determine the nominal stress for post-processing.
** Nodes 3,6,7 are tied to node 2 in dof 1 so that:
** Nominal stress (dof 1) = RF1 (@ node 2) / Original area
** (w/c is 1 x 1 = 1)
2
FACE42,1,1, 2,1,-1
*EQUATION
2
FACE52,2,1,3,2,-1
*ELEMENT,TYPE=C3D8RH,ELSET=ONE
1,1,2,3,4,5,6,7,8
*SOLID SECTION,ELSET=ONE,MATERIAL=YEOH
*MATERIAL,NAME=YEOH
*HYPERELASTIC, YEOH
1.326,-0.326,0.1319,0.0,0.0,0.0
*MULLINS EFFECT,TEST DATA INPUT
*PLANAR TEST DATA
98.9568    ,      2.   
62.4102    ,      1.9  
39.7517    ,      1.8  
25.958     ,      1.7  
17.4286    ,      1.6  
11.9816    ,      1.5  
 8.37799   ,      1.4  
 5.92302   ,      1.3  
 4.21898   ,      1.2  
 3.02851   ,      1.1  
 2.2017    ,      1.   
 1.63739   ,      900.E-03 
 1.26259   ,      800.E-03 
 1.02129   ,      700.E-03 
 868.284E-03,     600.E-03  
 765.72E-03 ,     500.E-03  
 681.104E-03,     400.E-03  
 586.018E-03,     300.E-03  
 455.248E-03,     200.E-03  
 266.316E-03,     100.E-03  
 0.,0.
*PLANAR TEST DATA
561.053    ,  3.   
345.872    ,  2.85 
215.537    ,  2.7  
138.188    ,  2.55 
91.3716    ,  2.4  
61.8989    ,  2.25    
42.5327    ,  2.1     
29.3416    ,  1.95    
20.1378    ,  1.8     
13.6458    ,  1.65    
 9.07634   ,  1.5     
 5.90754   ,  1.35    
 3.77131   ,  1.2     
 2.3926    ,  1.05    
 1.55638   ,  900.E-03  
 1.08902   ,  750.E-03  
 847.405E-03, 600.E-03  
 711.932E-03, 450.E-03  
 581.221E-03, 300.E-03  
 368.084E-03, 150.E-03  
 0.,0.
*STEP,NLGEOM,INC=20
PLANAR TENSION
*STATIC,DIRECT
1.,20.
*BOUNDARY,OP=NEW
FACE1,3
FACE3,2
FACE6,1
FACE4,1,1,2.
FACE5,2,2,0.
*EL PRINT,F=10
S, 
E, 
*NODE PRINT,F=10
U,RF
*OUTPUT,HISTORY
*NODE OUTPUT,NSET=FACE4
U,RF
*ELEMENT OUTPUT,ELSET=ONE
S,
DMENER,
SENER,
*END STEP
*STEP,NLGEOM,INC=20
*STATIC,DIRECT
1.,20.
*BOUNDARY,OP=NEW
FACE1,3
FACE3,2
FACE6,1
FACE4,1,1,0.0
FACE5,2,2,0.0
*END STEP
*STEP,NLGEOM,INC=20
*STATIC,DIRECT
1.,20.
*BOUNDARY,OP=NEW
FACE1,3
FACE3,2
FACE6,1
FACE4,1,1,3.
FACE5,2,2,0.
*END STEP
*STEP,NLGEOM,INC=20
*STATIC,DIRECT
1.,20.
*BOUNDARY,OP=NEW
FACE1,3
FACE3,2
FACE6,1
FACE4,1,1,0.0
FACE5,2,2,0.0
*END STEP