*HEADING
 BARREL VAULT  (18 X 18 SC6R)                
*PREPRINT,ECHO=YES,MODEL=NO,HISTORY=NO
*NODE,SYSTEM=C,NSET=CORNER
   1,298.5,0.,0.
  19,298.5,,300.
 361,298.5,40.,
 379,298.5,40.,300.
1001,301.5,0.,0.
1019,301.5,,300.
1361,301.5,40.,
1379,301.5,40.,300.
*NGEN,LINE=C,NSET=WALL
 1,361,20
 1001,1361,20
*NGEN,LINE=C,NSET=SYMM
 19,379,20,,,,300.
 1019,1379,20,,,,300.
*NFILL
 WALL,SYMM,18,1
*NGEN,NSET=APEX
 1,19
 1001,1019
*ELEMENT,TYPE=SC6R
 1,1001,1002,1022,1,2,22
 2,1001,1022,1021,1,22,21
*ELGEN,ELSET=ROOF
 1,18,1,2,18,20,36
 2,18,1,2,18,20,36
*MATERIAL ,NAME=METAL
*ELASTIC
 3.E6, 
*BOUNDARY
 APEX,YSYMM
 SYMM,ZSYMM
 WALL,1,2
*SHELL SECTION ,MATERIAL=METAL,ELSET=ROOF,POISSON=ELASTIC
 3.,3
*STEP
 SELF-WEIGHT
*STATIC
*DLOAD
 ROOF,BX,-0.20833
*ENERGY PRINT
*EL PRINT,FREQ=0
*NODE FILE,NSET=CORNER
 U, 
 RF, 
*ENERGY FILE
*END STEP