*HEADING
 PRESSURIZED RUBBER DISC --- CAX4R ELEMENTS
 POLYNOMIAL STRAIN ENERGY POTENTIAL IS USED
*NODE,NSET=NOUT
   1,  0.0,  0.0
  11,  7.5,  0.0
  21,  0.0,  0.25
  31,  7.5,  0.25
  41,  0.0,  0.5
  51,  7.5,  0.5
*NGEN,LINE=P
 1,11,1,,2.142857143,0
 21,31,1,,2.142857143,.25
 41,51,1,,2.142857143,.5
*NSET,NSET=CENTER
 1,21,41
*ELEMENT,TYPE=CAX4R,ELSET=ALL
 1,1,2,22,21
*ELGEN,ELSET=ALL
 1,10,1,1,2,20,20
*ELSET,ELSET=BOTTOM,GEN
 1,10,1
*BOUNDARY
  31,1,2
 CENTER,XSYMM
*EQUATION
 2, 
 51,1,1.0,11,1,1.0
 2, 
 51,2,1.0,11,2,1.0
*SOLID SECTION,ELSET=ALL,MATERIAL=A1
*MATERIAL,NAME=A1
*DENSITY
 1.E-4,
*HYPERELASTIC,N=1
 80.,20.,
*AMPLITUDE,NAME=RAMP
 0.,0., .01,1.
*RESTART,TIMEMARKS=NO,WRITE,N=30
**
**
*STEP
*DYNAMIC,EXPLICIT
 ,0.01
*DLOAD,AMP=RAMP
 BOTTOM,P1,46.
*MONITOR,NODE=21,DOF=2
*OUTPUT,FIELD,VAR=PRESELECT,NUM=5
**
** Output for qa testing
**
*NSET,NSET=QA_TEST
NOUT,
*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