*HEADING
EC34AFAR: IMPEDANCE PROPERTY  [AC3D4]
*NODE, Nset=ODB_NSET
1, 
41,,10.
1001,1.
1041,1.,10.
2001,,,1.
2041,,10.,1.
3001,1.,,1.
3041,1.,10.,1.
*NGEN,NSET=ALL_NODES
1,41
1001,1041
2001,2041
3001,3041
*ELEMENT,TYPE=AC3D4,ELSET=ALL_ELEMENTS
    1,    1,    3, 2003, 1001
    2,    3, 2003, 1001, 1003
    3, 2003, 1001, 1003, 3003
    4,    1, 2003, 2001, 1001
    5, 2003, 2001, 1001, 3003
    6, 2001, 1001, 3003, 3001
*ELGEN,ELSET=ALL_ELEMENTS
1,20,2,6
2,20,2,6
3,20,2,6
4,20,2,6
5,20,2,6
6,20,2,6
*elset,elset=liner4
4, 
*elset,elset=liner6
6, 
*MATERIAL,NAME=AIR
*DENSITY
1.293, 
*ACOUSTIC MEDIUM,BULK MODULUS
1.42176e5, 
*SOLID SECTION,MATERIAL=AIR,ELSET=ALL_ELEMENTS
*IMPEDANCE PROPERTY,NAME=IMPED
0.0,2.332317E-3
*NSET,NSET=QA_TEST,GEN
1,41
*NSET,NSET=DRIVEN_NODES
41,1041,2041,3041
**
*STEP
*STEADY STATE DYNAMIC,DIRECT
1., 
5., 
10., 
15., 
20., 
25., 
50., 
75., 
100., 
*IMPEDANCE,prop=imped
liner4,I4,
liner6,I2,
*BOUNDARY
DRIVEN_NODES,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