*HEADING
EXPLICIT: GLOBAL MODEL
ACOUSTIC TO STRUCTURE SUBMODELING [SAX1/ACAX4R]
ACOUSTIC PRESSURE APPLIED ON BOTH SIDES OF THE SHELL;
*PREPRINT, ECHO=YES,MODEL=YES,HISTORY=YES
*PARAMETER
F=15.0
T=1.0/F
T10=10*T
T2=2*T
T4=4*T
T6=6*T
T03=0.3*T
F_OUT_HIST=T/1000
OMEGA=2*3.14159*F
*NODE,NSET=ACOUS_BOT
*NODE,NSET=ACOUS_TOP
*NSET,NSET=ACOUS
ACOUS_BOT,ACOUS_TOP
*NSET,NSET=POR
*NODE,NSET=SHELL
*NSET,NSET = QA_TEST
SHELL,
*ELEMENT,TYPE=ACAX4R,ELSET=ACOUS_BOT
*ELEMENT,TYPE=ACAX4R,ELSET=ACOUS_TOP
*ELSET,ELSET=ACOUS
ACOUS_BOT,ACOUS_TOP
*ELEMENT,TYPE=SAX1,ELSET=SHELL
*SOLID SECTION, MATERIAL=FLUID,ELSET=ACOUS
*SHELL SECTION, MATERIAL=STEEL,ELSET=SHELL
0.2,
*MATERIAL,NAME=FLUID
*DENSITY
1000.0,
*ACOUSTIC MEDIUM
*MATERIAL,NAME=STEEL
*DENSITY
7800.0,
*ELASTIC
207E9,0.3
*SURFACE,TYPE=ELEMENT,NAME=FLUID_B
3,S3
4,S3
*SURFACE,TYPE=ELEMENT,NAME=FLUID_T
5,S1
6,S1
*SURFACE,TYPE=ELEMENT,NAME=SHELL_B
11,SNEG
12,SNEG
*SURFACE,TYPE=ELEMENT,NAME=SHELL_T
11,SPOS
12,SPOS
*TIE,NAME=BOT
FLUID_B,SHELL_B
*TIE,NAME=TOP
FLUID_T,SHELL_T
*AMPLITUDE,NAME=SINE,DEF=PERIODIC
1,<OMEGA>,0.0,0.0
0,1,0,0
*NSET,NSET=DRIV
*BOUNDARY
21,1,6
25,1,6
*STEP
*DYNAMIC,EXPLICIT
,<T03>
*BOUNDARY,AMP=SINE
DRIV,8,,1e9
***********************************
***    DO NOT MODIFY THE GLOBAL ***
***          FIL REQUEST     ******
***********************************
*FILE OUTPUT,NUM=40
*NODE FILE,NSET=ACOUS
POR,
*******************
*OUTPUT,FIELD,NUM=40
*NODE OUTPUT,NSET=ACOUS
POR,
*NODE OUTPUT,NSET=SHELL
U,
*ELEMENT OUTPUT, ELSET=SHELL
S,
*******************
*OUTPUT,HISTORY,TIME INTERVAL=<F_OUT_HIST>
*NODE OUTPUT,NSET=SHELL
U,
*NODE OUTPUT,NSET=POR
POR,
*****************QA_TEST***********
*OUTPUT, FIELD, NUMBER INTERVAL = 1
*NODE OUTPUT,NSET=QA_TEST
U,
*******************
*END STEP