*HEADING
EC24AFAR: IMPEDANCE PROPERTY  [AC2D4]
*NODE, Nset=ODB_NSET
1, 
41,,10.
1001,1.
1041,1.,10.
*NGEN,NSET=NALL
1,41
1001,1041
*ELEMENT,TYPE=AC2D4,ELSET=EALL
1,1,1001,1003,3
*ELGEN,ELSET=EALL
1,20,2,1
*ELSET,ELSET=LINER3
20, 
*MATERIAL,NAME=AIR
*DENSITY
1.293, 
*ACOUSTIC MEDIUM,BULK MODULUS
1.42176E5, 
*SOLID SECTION,MATERIAL=AIR,ELSET=EALL
*IMPEDANCE PROPERTY,NAME=IMPED
0.0,2.332317E-3
*NSET,NSET=QA_TEST,GEN
1,41
*NSET,NSET=DRIV
1,1001
**
*STEP
*STEADY STATE DYNAMIC,DIRECT
1., 
5., 
10., 
15., 
20., 
25., 
50., 
75., 
100., 
*IMPEDANCE,prop=IMPED
LINER3,I3
*BOUNDARY
DRIV,8,,1.
*NODE PRINT,NSET=QA_TEST
POR,
*OUTPUT,FIELD, OP=NEW
*NODE OUTPUT,NSET=QA_TEST
POR,
*OUTPUT,HISTORY,OP=ADD
*NODE OUTPUT,NSET=QA_TEST
POR,
*END STEP