*HEADING
 : LARGE STRAIN VISCOELASTICITY - VAN DER WAALS MODEL - CPE4H
*NODE
1,
2,10.
3,10.,5.,
4,0.,5.,
*ELEMENT,TYPE=CPE4H,ELSET=ONE
1,1,2,3,4
*SOLID SECTION,ELSET=ONE,MATERIAL=VANWAALS
1., 
*MATERIAL,NAME=VANWAALS
*HYPERELASTIC,VAN DER WAALS,MODULI=INSTANTANEOUS
20., 10., 0.1, 0.02
*VISCOELASTIC,TIME=PRONY
0.5,0.,3.
*BOUNDARY
1,1,2
2,2,2
4,1,1
*STEP,NLGEOM
*VISCO
2.,10.,2.,10.,
*BOUNDARY
3,1,1,2.
2,1,1,2.
*EL FILE,F=1
S,E,CE,CEP
*NODE FILE,F=10
U,RF
*END STEP