*HEADING
  - COMPR. HYPEREL. (POLYNOMIAL), TEST DATA INPUT
************************************************************************
** TESTING FOR INITIAL CONDITIONS, TYPE=STRESS
** Consists of two steps:
** step 1: all the nodes fixed. The resulting stresses must reflect 
**         what is initially specified
** step 2: some of the nodes are allowed to displace resulting in
**         a stress free state.
************************************************************************
*RESTART, WRITE, FREQ=1
*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
2,3,6,7
*NSET,NSET=FACE5
3,4,7,8
*NSET,NSET=FACE6
4,1,8,5
**************************************
*ELEMENT,TYPE=C3D8RH,ELSET=ONE
1,1,2,3,4,5,6,7,8
*SOLID SECTION,ELSET=ONE,MATERIAL=POLY
*MATERIAL,NAME=POLY
*HYPERELASTIC, TEST DATA INPUT, N=1
*UNIAXIAL TEST DATA
  1.5506,  0.1338
  2.4367,  0.2675
  3.1013,  0.3567
  4.2089,  0.6242
  5.3165,  0.8917
  5.9810,  1.1592
  6.8671,  1.4268
  8.8608,  2.0510
 10.6329,  2.5860
 12.4051,  3.0318
 16.1709,  3.7898
 19.9367,  4.3694
 23.4810,  4.8153
 27.4684,  5.1720
 31.0127,  5.4395
 34.5570,  5.7070
 38.3228,  5.9299
 42.0886,  6.0637
 45.6329,  6.1975
 49.3987,  6.3312
 53.1646,  6.4650
 56.9304,  6.5541
 64.2405,  6.6433
*BIAXIAL TEST DATA
  0.9384,  0.0200
  1.5900,  0.0600
  2.4087,  0.1100
  2.6220,  0.1400
  3.3240,  0.2000
  4.4278,  0.3100
  5.1830,  0.4200
  6.6024,  0.6800
  7.7794,  0.9400
  9.7857,  1.4900
 12.6351,  2.0300
 14.6804,  2.4300
 17.4000,  2.7500
 20.1058,  3.0700
 22.4502,  3.2600
 24.6530,  3.4500
*PLANAR TEST DATA
  0.6000,  0.0690
  1.6000,  0.1034
  2.4000,  0.1724
  3.3600,  0.2828
  4.2000,  0.4276
  6.0000,  0.8483
  7.8000,  1.3862
  9.6000,  2.0000
 11.1200,  2.4897
 12.9600,  3.0345
 14.8800,  3.4483
 16.5800,  3.7793
 18.2000,  4.0621
*VOLUMETRIC TEST DATA
60.,  .9703
118.2,.9412
175.2,.9127
231.1,.8847
**************************************
*INITIAL CONDITIONS, TYPE=STRESS
ONE, -500.0, -500.0, -500.0
**
******* S T E P - 1 ******************
**
*STEP,NLGEOM,INC=20
VOLUMETRIC COMPRESSION
*STATIC
0.1, 1.0
*BOUNDARY
ALL, 1, 3
*OUTPUT,FIELD,FREQ=10
*ELEMENT OUTPUT
S,E
*END STEP
**
******* S T E P - 2 ******************
**
*STEP, NLGEOM, INC=20
*STATIC
0.1, 1.0
*BOUNDARY,OP=NEW
FACE1,3
FACE3,2
FACE6,1
*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