*HEADING
CASE A,   B21, CENTRIF
*NODE
*NGEN
*NSET,NSET=FIXED
*NGEN
*NSET,NSET=AUSSEN
*NGEN
*ELEMENT,TYPE=B21
*ELGEN,ELSET=BEAM
*BEAM SECTION,SECTION=RECT,ELSET=BEAM,MATERIAL=BEAM
.028,.003
0.,0.,-1.
*MATERIAL,NAME=BEAM
*ELASTIC
2.17E11,0.0
*DENSITY
7850.,
*BOUNDARY
FIXED,ENCASTRE
**
*************************************  STEP 1: FREQUENCY AT 0 REVS/SEC
**
*STEP
FREQUENCY FOR OMEGA = 0 RAD/SEC
*FREQUENCY, eigensolver=lanczos
1, ,
*EL PRINT,FREQUENCY=0
*MODAL FILE
*END STEP
**
*************************************  STEP 2: SPIN UP TO 25 REVS/SEC
**
*STEP,NLGEOM
OMEGA = 157.08 RADS/SEC
*STATIC
*DLOAD
BEAM,CENTRIF,24674.1146497,0.,0.,0.,1.,0.,0.
*EL PRINT,FREQUENCY=0
*NODE FILE,NSET=AUSSEN
U,
*OUTPUT,FIELD
*NODE OUTPUT,NSET=AUSSEN
U,
*END STEP
**
*************************************  STEP 3: FREQUENCY AT 25  REVS/SEC
**
*STEP,NLGEOM
EIGENFREQUENCY AT OMEGA = 157.08 RAD/SEC
*FREQUENCY, eigensolver=lanczos
1, ,
*EL PRINT,FREQUENCY=0
*MODAL FILE
*END STEP
**
*************************************  STEP 4: SPIN UP TO 50 REVS/SEC
**
*STEP,NLGEOM
OMEGA = 314.26 RADS/SEC
*STATIC
*DLOAD
BEAM,CENTRIF,98696.4968153,0.,0.,0.,1.,0.,0.
*EL PRINT,FREQUENCY=0
*END STEP
**
*************************************  STEP 5: FREQUENCY AT 50 REVS/SEC
**
*STEP,NLGEOM
EIGENFREQUENCY AT OMEGA = 314.16 RAD/SEC
*FREQUENCY, eigensolver=lanczos
1, ,
*EL PRINT,FREQUENCY=0
*MODAL FILE
*END STEP
**
*************************************  STEP 6: SPIN UP TO 75 REVS/SEC
**
*STEP,NLGEOM
OMEGA = 471.24 RAD/SEC
*STATIC
*DLOAD
BEAM,CENTRIF,222067.133758,0.,0.,0.,1.,0.,0.
*EL PRINT,FREQUENCY=0
*END STEP
**
*************************************  STEP 7: FREQUENCY AT 75 REVS/SEC
**
*STEP,NLGEOM
EIGENFREQUENCY AT OMEGA = 471.24 RADS/SEC
*FREQUENCY, eigensolver=lanczos
1, ,
*EL PRINT,FREQUENCY=0
*MODAL FILE
*END STEP