*HEADING
:SUBMODEL [ACAX3] from submodelacoust_gd_acax4_std
ABAQUS/STANDARD
**********************************************
** The speed of sound c=sqrt(K/rho)=330m/s  
** The pressure wave will reach the nset BOT
** (and it will drive the pressure wave farther)
** in about t=8.0/c=0.024 sec
**********************************************
*PARAMETER
f=25.0
T=1.0/f
out_hist=T/100
omega=2*3.14159*f
******************
*NODE, Nset=ODB_NSET
33,,8.0
55,,10.
833,.5641896,8.
855,.5641896,10.
*NSET,NSET=QA_TEST
ODB_NSET
*NGEN,NSET=NALL
33,55,2
833,855,2
33,833,200
55,855,200
233,255,2
433,455,2
633,655,2
*ELEMENT,TYPE=ACAX3,ELSET=EALL
1,33,235,35
2,33,233,235
*ELGEN,ELSET=EALL
1,4,200,2,11,2,8,1
2,4,200,2,11,2,8,1
*ELSET,ELSET=LINER3
81,85,83,87
*MATERIAL,NAME=AIR
*DENSITY
1.293, 
*ACOUSTIC MEDIUM,BULK MODULUS
1.42176E5, 
*SOLID SECTION,MATERIAL=AIR,ELSET=EALL
*NGEN,NSET=DRIV
33,833,200
*SUBMODEL,ABSOLUTE=0.03
DRIV, 
**
*AMPLITUDE,NAME=SINE,DEF=PERIODIC
1,<omega>,0.0,0.0
0,1,0,0
*STEP
*DYNAMIC
1e-3,<T>
*IMPEDANCE
LINER3,I2
*BOUNDARY,submodel,step=1
DRIV,8,8
*********************
*OUTPUT,FIELD,FREQ=100
*NODE OUTPUT,NSET=QA_TEST
POR,
*********************
*OUTPUT,FIELD,FREQ=10
*NODE OUTPUT
POR,
*********************
*OUTPUT,HISTORY,FREQ=1
*NODE OUTPUT,NSET=ODB_NSET
POR,
*********************
*END STEP