*HEADING
PRESSURIZING OF A FLAT RUBBER PLATE (SAXA11)              
*NODE
21,0.0,.25,0.0
31,7.5,.25,0.0
*NGEN,LINE=P
21,31,1,,2.142857143,.25
*ELEMENT,TYPE=SAXA11,ELSET=ONE,OFFSET=1000
1,21,22
*ELGEN,ELSET=ALL
1,10,1,1
*NSET,NSET=CENTER
21,1021
*BOUNDARY
  31,1,2
1031,1,2
CENTER,1,1
CENTER,6,6
*SHELL SECTION,MATERIAL=A1,ELSET=ALL
 .5,3
*MATERIAL,NAME=A1
*HYPERELASTIC,OGDEN,N=2
160.,2.,40.,-2.
*RESTART,WRITE,FREQUENCY=2
*STEP,NLGEOM,INC=18, UNSYMM=YES
*STATIC,RIKS
.01,1.0,.00001,1.0,1.0,21,2,30.
*DLOAD
ALL,P,2.0E+2
*MONITOR,NODE=21,DOF=2
*CONTROLS, PARAMETERS=FIELD

,0.0,
*EL PRINT,FREQUENCY=5,ELSET=ALL
1,2,3
COORD,  
E, 
DG, 
LOADS, 
S,MISES
ENER, 
*EL PRINT,FREQUENCY=1,ELSET=ONE,SUMMARY=NO
1,2,3
COORD,  
E, 
DG, 
LOADS, 
S,MISES
ENER, 
STH, 
*NODE FILE,NSET=CENTER
U ,RF
*OUTPUT,FIELD
*NODE OUTPUT,NSET=CENTER
U,RF
*EL FILE,FREQUENCY=2,ELSET=ONE
COORD,  
E, 
DG, 
LOADS, 
S , 
*OUTPUT,FIELD,FREQ=2
*ELEMENT OUTPUT,ELSET=ONE
COORD,
E,
S,
*EL FILE,ELSET=ONE
STH, 
*OUTPUT,FIELD
*ELEMENT OUTPUT,ELSET=ONE
STH,
*NODE PRINT
U,RF
*END STEP