*heading
*node
*element,type=cps4r,elset=one
*solid section,elset=one,material=low_density_foam
*material,name=low_density_foam
*density
 5.0000e-010,
*hyperfoam, n=3
-1048.43,0.3025,532.20,0.3958,517.027,0.2135,0.2,0.2,
0.2
*mullins effect
*nset,nset=ndisp
*equation
*nset,nset=left
*nset,nset=bot
*boundary
left,1,1,
bot,2,2,
*step
*dynamic, explicit
 ,1.0e-2
*boundary, type=velocity
ndisp,1,1,0.5e2
*output,field
*element output
 s, le
*node out
 rf, u
*output, history, variable=preselect
*element output, elset=one
 s11, le11, ne11, ener, else
*node out, nset=ndisp
 rf1
*end step
*step
 unloading
*dynamic, explicit
 ,1.0e-2
*boundary, type=velocity
 ndisp,1,1,-0.5e2
*end step
*step
*dynamic, explicit
 ,1.0e-2
*boundary, type=velocity
 ndisp,1,1,1.0e2
*end step
*step
 unloading
*dynamic, explicit
 ,1.0e-2
*boundary, type=velocity
 ndisp,1,1,-1.0e2
*end step