*HEADING
PATCH TEST FOR ACOUSTIC ELEMENTS IN ABAQUS/EXPLICIT [ACAX3]
**
** P=C0+C1*R+C2*Z; C0=-2E5; C1=200; C2=100;
** THE ACOUSTIC PRESSURES AT THE INTERIOR NODES ARE:
** P_102=10;P_104=39;P_202=24;P_204=40;
** SEE CH. 1.5.9 OF ABAQUS/VERIFICATION MANUAL
**
*PREPRINT,ECHO=YES,HISTORY=YES,MODEL=YES
*NODE, NSET=NALL
*NSET,NSET=QA_TEST
*NSET,NSET=NOUT
QA_TEST
*ELEMENT,TYPE=ACAX3, ELSET=EALL
*SOLID SECTION,ELSET=EALL,MATERIAL=A1
.12,
*MATERIAL,NAME=A1
*ACOUSTIC MEDIUM,BULK MODULUS
*DENSITY
1.0E+03,
*AMPLITUDE,NAME=RAMP,DEF=SMOOTH STEP
0.0,0.0,0.02,1.0,0.03,1.0
*RESTART,WRITE,NUM=10
*STEP
*DYNAMIC, EXPLICIT
,.03
*BOUNDARY,AMP=RAMP
10,8, ,  0.0
20,8, , 48.0
30,8, , 60.0
40,8, , 12.0
*******************
*OUTPUT,FIELD, NUM=1
*NODE OUTPUT, NSET=QA_TEST
POR
*NODE OUTPUT
POR
*******************
*OUTPUT,HISTORY, TIME INTERVAL=0.0015
*NODE OUTPUT, NSET=NOUT
POR
*******************
*END STEP