*HEADING
 BARREL VAULT  (18 X 18 SC6R)
*PREPRINT,ECHO=YES,MODEL=NO,HISTORY=NO
*NODE,SYSTEM=C,NSET=CORNER
*NGEN,LINE=C,NSET=WALL
*NGEN,LINE=C,NSET=SYMM
*NFILL
 WALL,SYMM,18,1
*NGEN,NSET=APEX
*ELEMENT,TYPE=SC6R
*ELGEN,ELSET=ROOF
*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