*HEADING
 EIGENVALUE PROBLEM OF A CANTILEVER         
*PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO
*NODE
 1, 0.,0.
 11,5.,0.
 17,5.,0.
 20,1.,,,,1.,0.
*NGEN
 1,11
*ELEMENT,TYPE=B23
 1,1,2
*ELGEN,ELSET=EALL
 1,10
*ELEMENT,TYPE=B23
 3,20,4
*BEAM SECTION,SECTION=CIRC,MATERIAL=A1,ELSET=EALL
 .1, 
*MATERIAL,NAME=A1
*ELASTIC
 27.E6, 
*DENSITY
 7.5E-4, 
*EQUATION
 2, 
 11,2,1.,17,2,-1.
 2, 
 3,1,1.,20,1,-1.
 2, 
 3,2,1.,20,2,-1.
 2, 
 3,6,1.,20,6,-1.
*BOUNDARY
 1,1,2
 1,6
 17,1,2
*STEP
  FREE VIBRATION
*FREQUENCY, eigensolver=lanczos
 5, ,10000., 
*EL PRINT,FREQUENCY=0
*MODAL FILE
*END STEP