*HEADING
 BARREL VAULT  (4 X 4 STRI3)      
*PREPRINT,ECHO=YES,MODEL=NO,HISTORY=NO
*NODE,SYSTEM=C,NSET=CORNER
110,300.0,0.0,0.0
150,300.0,0.,300.
510,300.,40.,0.0
550,300.,40.,300.
2000,,,
*NGEN,LINE=C,NSET=WALL
110,510,100,2000
*NGEN,LINE=C,NSET=SYMM
150,550,100,,0.,0.,300.
*NFILL
WALL,SYMM,4,10
*NGEN,NSET=APEX
110,150,10
*ELEMENT,TYPE=STRI3,ELSET=ROOF1
1,110,120,220
2,110,220,210
*ELGEN,ELSET=ROOF
1,4,100,2,4,10,20
2,4,100,2,4,10,20
*MATERIAL,NAME=STEEL
*ELASTIC
3.E6, 
*SHELL SECTION ,MATERIAL=STEEL,ELSET=ROOF
3.,3
*BOUNDARY
APEX,YSYMM
SYMM,ZSYMM
WALL,1,2
*STEP
SELF WEIGHT
*STATIC
*DLOAD
ROOF,BX,-0.20833
*ENERGY PRINT
*EL PRINT,FREQUENCY=0
*EL FILE,ELSET=ROOF1
S,SINV
SF, 
ENER, 
E, 
*NODE FILE,NSET=CORNER
U, 
RF, 
*ENERGY FILE
*END STEP