*HEADING
 RING COLLAPSE ( 2 S8R )
*NODE,INPUT=RINGSHL.NOD
*NSET,NSET=EDGE
*NSET,NSET=TOP
*ELEMENT,TYPE=S8R,ELSET=ONE
*ELGEN,ELSET=SHEL
*SHELL SECTION,MATERIAL=A1,ELSET=SHEL
1.,3
*MATERIAL,NAME=A1
*ELASTIC
30.E6,.0
*NSET,NSET=Y0
*NSET,NSET=X0
*BOUNDARY
X0,XSYMM
Y0,YSYMM
TOP,3,5
EDGE,3,5
*STEP,NLGEOM,INC=40
*STATIC
 .2,1.
*DLOAD
SHEL,P,-10.
*PRINT,RESIDUAL=NO
*NODE PRINT,FREQUENCY=2
*EL PRINT,ELSET=ONE,FREQUENCY=10,SUMMARY=NO
S,
*EL FILE,ELSET=ONE
LOADS,
S,
*NODE FILE,NSET=EDGE
U,
*NSET,NSET=RFOUT
X0,Y0
*NODE FILE,NSET=RFOUT
RF,
*END STEP