*HEADING
: submodel [AC2D8]
*NODE, Nset=ODB_NSET
33,,8.5
55,,10.
833,1.,8.5
855,1.,10.
*NGEN,NSET=NALL
33,55
833,855
33,833,100
55,855,100
233,255
433,455
633,655
*ngen,nset=odds
733,755
533,555
333,355
133,155
*ELEMENT,TYPE=AC2D8,ELSET=EALL
1,33,233,235,35,133,234,135,34
*ELGEN,ELSET=EALL
1,4,200,1,11,2,4,1
*ELSET,ELSET=LINER3
41,42,43,44
*MATERIAL,NAME=AIR
*DENSITY
1.293, 
*ACOUSTIC MEDIUM,BULK MODULUS
1.42176E5, 
*SOLID SECTION,MATERIAL=AIR,ELSET=EALL
*ngen,nset=driv
33,833,100
*submodel,absolute=0.03
driv, 
**
** Sets added by addodb
**
*Elset,Elset=ODB_ESET
EALL,
**
**
*Nset, Nset=ODB_NSET
ODB_NSET, NALL, odds, driv
**
**
*STEP
*STEADY STATE DYNAMIC,DIRECT
10., 
25., 
50., 
*IMPEDANCE
LINER3,I3
*BOUNDARY,submodel,step=1
DRIV,8,8
*NODE PRINT,NSET=DRIV
POR,PPOR
*NODE FILE,nset=nall
POR,PPOR
*OUTPUT,FIELD,VARIABLE=PRESELECT,OP=ADD,FREQUENCY=9999
*OUTPUT,FIELD, OP=ADD
*NODE OUTPUT,nset=nall
POR,
*OUTPUT,HISTORY,OP=ADD
*NODE OUTPUT,nset=nall
POR,
*END STEP