*HEADING
EXPLICIT:GLOBAL MODEL
ACOUSTIC TO STRUCTURE SUBMODELING [C3D8R/AC3D8R]
ACOUSTIC PRESSURE APPLIED ON ONE SIDE OF THE SOLID;
*PARAMETER
f=15
T1=1.0/f
T01=0.1*T1
omega=2*3.14159*f
*NODE, NSET=BACK_S
*NODE, NSET=FRONT_S
*NODE, NSET = CENTER_S
*NODE, NSET=BACK_F
*NODE, NSET=FRONT_F
*NSET, NSET=NODE2
FRONT_S,
*NSET, NSET=SOLID
FRONT_S,CENTER_S,BACK_S
*NSET, NSET=QA_TEST
NODE2
*NSET,NSET=ACOUS
BACK_F,FRONT_F
*ELEMENT, TYPE=C3D8R, ELSET=SOLID
*ELEMENT,TYPE=AC3D8R, ELSET=FLUID
*SOLID SECTION, ELSET=SOLID, MATERIAL=ELAS
*MATERIAL, NAME=ELAS
*ELASTIC
207E9,0.3
*DENSITY
7800.0
*****
*SOLID SECTION, ELSET=FLUID, MATERIAL=FLUID
*MATERIAL, NAME=FLUID
*ACOUSTIC MEDIUM
*DENSITY
1000.0
**
*SURFACE,NAME=SOLID
3,S2
4,S2
*SURFACE,NAME=FLUID
5,S1
6,S1
*TIE,NAME=COUPLE
SOLID,FLUID
**
*BOUNDARY
BACK_S,1,3
**
*AMPLITUDE,NAME=SINE,DEF=PERIODIC
1,<omega>,0.0,0.0
0,1,0,0
**
** Step 1
**
*STEP
*DYNAMIC, EXPLICIT
,<T01>
*BOUNDARY, AMP=SINE
FRONT_F,8,,1e10
***********************************
*FILE OUTPUT,NUMBER INTERVAL=40
*NODE FILE, NSET=ACOUS
POR,
*NODE FILE, NSET=SOLID
U,
***************
*OUTPUT,FIELD,NUMBER INTERVAL=40,TIMEMARKS=YES
*NODE OUTPUT,NSET=ACOUS
POR,
*NODE OUTPUT,NSET=SOLID
U,
*****************
*OUTPUT,HISTORY
*NODE OUTPUT,NSET=BACK_F
POR,
*NODE OUTPUT,NSET=NODE2
U1,
*****************QA_TEST***********
*OUTPUT, FIELD, NUMBER INTERVAL = 1,TIMEMARKS=YES
*NODE OUTPUT,NSET=QA_TEST
U,
*END STEP