*HEADING
 CANTILEVER ON SPRING SUPPORT AT FREE END
*PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO
*NODE
*NGEN
*ELEMENT,TYPE=B23
*ELGEN,ELSET=EALL
*BEAM SECTION,SECTION=CIRC,MATERIAL=A1,ELSET=EALL
 .1,
*ELEMENT,TYPE=SPRING1,ELSET=S1
*SPRING,ELSET=S1
2,
1.E7,
*MATERIAL,NAME=A1
*ELASTIC
 27.E6,
*DENSITY
 7.5E-4,
*BOUNDARY
 1,1,2
 1,6
*STEP
 GET VIBRATION FREQUENCIES AND MODE SHAPES
*FREQUENCY, eigensolver=lanczos, SIM=NO
 5, ,10000.,
*EL PRINT,FREQUENCY=0
*MODAL FILE
*END STEP