*HEADING
 Test HYPERELASTIC, Marlow with *BIAXIAL TEST DATA  
 Lateral strains are used
*PREPRINT,ECHO=NO,MODEL=YES
**
**Nodal data for the biaxial test
**For the POLYNOMIAL, N=2 material model
**
*NODE
1, 0.000000, 0.000000, 0.000000
2, 1.000000, 0.000000, 0.000000
3, 1.000000, 1.000000, 0.000000
4, 0.000000, 1.000000, 0.000000
5, 0.000000, 0.000000, 1.000000
6, 1.000000, 0.000000, 1.000000
7, 1.000000, 1.000000, 1.000000
8, 0.000000, 1.000000, 1.000000
*NSET, NSET=BIAXIALLOAD
6,
*NSET, NSET=BIAXIALLOAD_0
6,
*NSET, NSET=BIAXIALEQN1_0
5, 7, 8
*NSET, NSET=BIAXIALEQN2_0
2, 3, 7
*ELEMENT, ELSET=POLY_N2, TYPE=C3D8H
1,1,2,3,4,5,6,7,8
*EQUATION
2
BIAXIALEQN1_0, 3, 1, BIAXIALLOAD_0, 3, -1
2
BIAXIALEQN2_0, 1, 1, BIAXIALLOAD_0, 1, -1
**
**Section definitions
**
*SOLID SECTION, ELSET=POLY_N2, MATERIAL=POLY_N2
**
**Material definition for the POLYNOMIAL, N=2 material model
**
*MATERIAL, NAME=POLY_N2
*HYPERELASTIC, MARLOW
*BIAXIAL TEST DATA
  0.000000000000000E+000,  0.000000000000000E+000,  0.000000000000000E+000
   56874.0000000000     ,  2.000000000000000E-002, -3.519891225911698E-002
   152353.000000000     ,  6.000000000000000E-002, -0.100070612082535     
   243700.000000000     ,  0.110000000000000     , -0.172082636812765     
   286369.000000000     ,  0.140000000000000     , -0.211086629344290     
   354137.000000000     ,  0.200000000000000     , -0.281015297818361     
   444928.000000000     ,  0.310000000000000     , -0.386527925377315     
   521957.000000000     ,  0.420000000000000     , -0.469811119783872     
   671489.000000000     ,  0.680000000000000     , -0.608891287836511     
   794541.000000000     ,  0.940000000000000     , -0.698549563354782     
   1018900.00000000     ,   1.49000000000000     , -0.808103148987125     
   1256400.00000000     ,   2.03000000000000     , -0.865470322587372     
   1486550.00000000     ,   2.43000000000000     , -0.892508890727255     
   1724110.00000000     ,   2.75000000000000     , -0.908530405532378     
   2021930.00000000     ,   3.07000000000000     , -0.921127718732083     
   2232290.00000000     ,   3.26000000000000     , -0.927377976701754     
   2470820.00000000     ,   3.45000000000000     , -0.932891563145362     
**
**
*STEP, NLGEOM, INC=1000
 Compress
*STATIC
0.1,1.,,.05
**
**Boundary definition for BIAXIAL test
**
*BOUNDARY
BIAXIALLOAD,1,1, 3.5
BIAXIALLOAD,3,3, 3.5
1,1,3
2,2,3
3,3
4,1
4,3
5,1,2
8,1
*OUTPUT, HISTORY
*NODE OUTPUT, NSET=BIAXIALLOAD
U1,
RF1,
*OUTPUT, FIELD, VAR=preselect
*END STEP
**