*HEADING
:  LARGE STRAIN VISCO - VOLUMETRIC RELAXATION CPS4
*RESTART,WRITE
*NODE,nset=nall
1,
2,10.
3,10.,5.,
4,0.,5.,
*ELEMENT,TYPE=CPS4,ELSET=ONE
1,1,2,3,4
*SOLID SECTION,ELSET=ONE,MATERIAL=SIMPLE
1., 
*surface,NAME=SIDE
1,S3
*MATERIAL,NAME=SIMPLE
*HYPERELASTIC,N=1,MODULI=long term
 8.,2.,0.2
** *HYPERELASTIC,N=1,MODULI=INSTANTANEOUS
** 4.,1.,0.2  --> shouldn't change G if g's=0
*VISCOELASTIC,FREQUENCY=PRONY
0.,0.5,3.
*density
1.0,
***BOUNDARY
**1,1,2
**2,2,2
**4,1,1
*STEP,INC=500
*STEADY STATE DYNAMIC,DIRECT
.1,100.,5
*LOAD CASE,NAME=CASE1
*BOUNDARY,op=NEW
1,1,2
2,2,2
4,1,1
*CLOAD,op=NEW
3,1,-28.
2,1,-28.
4,2,-14.
3,2,-14.
*END LOAD CASE
*LOAD CASE,NAME=CASE2
*BOUNDARY,op=NEW
1,1,2
3,2,2
*CLOAD,op=NEW
2,1,-28.
4,2,-14.
*END LOAD CASE
*LOAD CASE,NAME=CASE3
*BOUNDARY,op=NEW
1,1,2
4,1,1
*CLOAD,op=NEW
3,1,-28.
2,1,-28.
4,2,-14.
3,2,-14.
*END LOAD CASE
*END STEP