*HEADING
 PRESSURIZED RUBBER DISC --- M3D4R ELEMENTS
*NODE,NSET=TOP
1,0.0,0.0
6,2.5,0.0
11,7.5,0.0
1006,0.0,2.5
501,0.0,2.5
1011,0.0,7.5
506,2.5,2.5
999,0.0,0.0,0.0
*NGEN,LINE=C,NSET=TOP
11,1011,100,,0.0,0.0,0.5
*NGEN,NSET=TOP
1,6,1
6,11,1
1006,1011,1
1,501,100
506,1006,100
6,506,100
106,111,1
206,211,1
306,311,1
406,411,1
506,511,1
606,611,1
706,711,1
806,811,1
906,911,1
101,106,1
201,206,1
301,306,1
401,406,1
*ELEMENT,TYPE=M3D4R
1,1,2,102,101
*ELGEN,ELSET=SHEET
1,5,1,1,4,100,100
*ELEMENT,TYPE=M3D4R,ELSET=SHEET
401,401,402,906,1006
402,402,403,806,906
403,403,404,706,806
404,404,405,606,706
405,405,406,506,606
*ELEMENT,TYPE=M3D4R
6,6,7,107,106
*ELGEN,ELSET=SHEET
6,5,1,1,10,100,100
*ELSET, ELSET=CAVSURF
   1,   2,   3,   4,   5,   6,   7,   8,   9,  10, 101, 102, 103, 104, 105, 106
 107, 108, 109, 110, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 301, 302
 303, 304, 305, 306, 307, 308, 309, 310, 401, 402, 403, 404, 405, 406, 407, 408
 409, 410, 506, 507, 508, 509, 510, 606, 607, 608, 609, 610, 706, 707, 708, 709
 710, 806, 807, 808, 809, 810, 906, 907, 908, 909, 910
*SURFACE, TYPE=ELEMENT, NAME=FLSURF
CAVSURF, SNEG
*NSET,NSET=XFIX,GEN
1,401,100
1006,1011,1
*NSET,NSET=YFIX,GEN
1,11
*NSET,NSET=HINGE,GEN
11,1011,100
*NSET,NSET=DEF
1,
*BOUNDARY
XFIX,XSYMM
YFIX,YSYMM
HINGE,1,3
*MEMBRANE SECTION,ELSET=SHEET,MATERIAL=A1
0.5, 
*MATERIAL,NAME=A1
*DENSITY
1.E-4, 
*HYPERELASTIC,N=1
80.,20.,
*PHYSICAL CONSTANTS,ABSOLUTE ZERO=-273.16, UNIVERSAL GAS CONSTANT=73.562
*FLUID CAVITY, NAME=CHAMBER, REF NODE=999, BEHAVIOR=GAS, SURFACE=FLSURF, AMBIENT PRESSURE=14.7

*FLUID BEHAVIOR, NAME=GAS
*MOLECULAR WEIGHT
0.01367
*CAPACITY, TYPE=TABULAR
112.847
*AMPLITUDE,NAME=RAMP
0.,0., .01,1.
**
*STEP
*DYNAMIC,EXPLICIT
,0.01
*BOUNDARY,AMP=RAMP
999,8,8,46.
*MONITOR,NODE=1,DOF=3
*OUTPUT,FIELD,VAR=PRESELECT,NUM=5
**
** Output for qa testing
**
*NSET,NSET=QA_TEST
TOP,
*FILE OUTPUT,NUMBER INTERVAL=1
*NODE FILE
 U, 
*OUTPUT,FIELD,NUMBER INTERVAL=1
*NODE OUTPUT,NSET=QA_TEST
 U,
*OUTPUT,HISTORY,VAR=PRESELECT,TIME INTERVAL=0.0025
**
*END STEP