*HEADING
 CANTILEVER WITH A TIP MOMENT  -  LARGE ROTATION       
*NODE
 1,,,,,1.
 21,10.
*NSET,NSET=NODE_AT_TIP
1,
*NGEN,NSET=ALL_NODES
 1,21,1
*ELEMENT,TYPE=B31H
 1,1,2
*ELGEN,ELSET=ALL_ELEMENTS
1,20,1,1
*BEAM SECTION,SECTION=PIPE,MATERIAL=MATERIAL_1,ELSET=ALL_ELEMENTS
 0.1,0.01
*MATERIAL,NAME=MATERIAL_1
*ELASTIC
 1.E8, 
*BOUNDARY
 21,1,6
 ALL_NODES,3,5,0.
*AMPLITUDE,NAME=HOLD_CONSTANT
 0.0, 1.0, 1.0, 1.0
*STEP,NLGEOM,INC=25
  CONCENTRATED TIP MOMENT
*STATIC
 .05,1.
*EL PRINT,FREQUENCY=5
S,E
*NODE FILE,NSET=ALL_NODES
U, 
RF, 
*NODE PRINT,SUMMARY=NO
U,
RF,
CF2, 
*BOUNDARY,TYPE=VELOCITY,AMPLITUDE=HOLD_CONSTANT
 NODE_AT_TIP,6,,12.566371
*END STEP