*HEADING
  - HYPERFOAM TEST, VOLUMETRIC COMPRESSION, TEST DATA, C3D8R
*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.
** -X DIR: FACE6, +X DIR: FACE4
** -Y DIR: FACE3, +Y DIR: FACE5
** -Z DIR: FACE1, +Z DIR: FACE2
*NSET,NSET=FACE1
1,4,5,8
*NSET,NSET=FACE2
1,2,3,4
*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
5
*NSET,NSET=FACE62
6,7,8
*EQUATION
2,
FACE42,1,1, 2,1,-1
*EQUATION
2, 
FACE52,2,1, 3,2,-1
*EQUATION
2, 
FACE62,3,1, 5,3,-1
*ELEMENT,TYPE=C3D8R,ELSET=ONE
1,1,2,3,4,5,6,7,8
*SOLID SECTION,MATERIAL=A1, ELSET=ONE
*MATERIAL,NAME=A1
*HYPERELASTIC,MARLOW
*UNIAXIAL TEST DATA
  0.000000000000000,       0.000000
  0.293576000000000,       0.070000
  0.553123000000000,       0.140000
  0.894649000000000,       0.245000
   1.33149000000000,       0.402500
   1.88076000000000,       0.638750
   2.56570000000000,       0.988750
   3.16851000000000,        1.33875
   3.72444000000000,        1.68875
   4.24952000000000,        2.03875
   4.75187000000000,        2.38875
   5.23598000000000,        2.73875
   5.70457000000000,        3.08875
   6.15941000000000,        3.43875
   6.60174000000000,        3.78875
   7.03250000000000,        4.13875
   7.45245000000000,        4.48875
   7.86223000000000,        4.83875
   8.26240000000000,        5.18875
   8.65346000000000,        5.53875
   9.03588000000000,        5.88875
   9.41008000000000,        6.23875
   9.77645000000000,        6.58875
   10.1354000000000,        6.93875
   10.1974000000000,        7.00000
*VOLUMETRIC TEST DATA
  0.000000000000000E+000,   1.00000000000000     
   50404.1968902818,       0.993701506240534     
   102074.872869822,       0.988077160075918     
   136591.220295415,       0.984630318889433     
   238034.143695355,       0.975452789289928     
   337952.024650277,       0.967612795566675     
   441389.790639265,       0.960762897027571     
   550642.263592744,       0.954674128193569     
   852979.691374449,       0.942641866429804     
   1182416.29247301,       0.934065511132404     
   1526226.88927638,       0.927802108042940     
   2325738.98582361,       0.918526532726257     
   3212342.37047572,       0.912332159110974     
   4138149.51685094,       0.907984994238999     
   5091855.49818833,       0.904729738768414     
   5966598.38341838,       0.902403768188189     
   7003910.32208214,       0.900167838337574     
   8032382.65472211,       0.898368492994245     
   8750531.58493995,       0.897314630642668     
   9606724.25983744,       0.896279564387554     
   10670364.3373774,       0.895263372216148     
   12056366.6245044,       0.894263895006858     
   13219512.3875575,       0.893607720716938     
   14618797.0119062,       0.892958133986974
*RESTART,WRITE,FREQ=8
*STEP,NLGEOM,INC=16
** VOLUMETRIC COMPRESSION
*STATIC,DIRECT
.05,.80
*BOUNDARY
FACE2,3
FACE3,2
FACE1,1
FACE4,1,1,-.037
FACE5,2,2,-.037
FACE6,3,3,-.037
*ENERGY PRINT
*EL PRINT,FREQ=8
S, 
E, 
*OUTPUT,FIELD,FREQ=8
*ELEMENT OUTPUT
S,E
*NODE PRINT,FREQ=8
U,RF
*OUTPUT,FIELD,FREQ=8
*NODE OUTPUT
U,RF
*OUTPUT,HISTORY
*ELEMENT OUTPUT,ELSET=ONE
PRESS
*NODE OUTPUT,NSET=ALL
U
*END STEP
*STEP,NLGEOM
*STATIC,DIRECT
.05,.80
*BOUNDARY
FACE2,3
FACE3,2
FACE1,1
FACE4,1,1,0.
FACE5,2,2,0.
FACE6,3,3,0.
*END STEP
*STEP,NLGEOM
*STATIC,DIRECT
.05,.80
*BOUNDARY
FACE2,3
FACE3,2
FACE1,1
FACE4,1,1,0.03448
FACE5,2,2,0.03448
FACE6,3,3,0.03448
*END STEP