*HEADING
CASE A, S8R, CENTRIF                         
*NODE
1,  -0.014, 0.150
3,   0.014, 0.150
121,-0.014, 0.478
123, 0.014, 0.478
*NGEN,NSET=FIXED
1,3,1
*NGEN,NSET=AUSSEN
121,123
*NGEN
1,121,10
2,122,10
3,123,10
*ELEMENT,TYPE=S8R
1,   1,  3,  23, 21,     2,  13,  22,  11
*ELGEN,ELSET=BEAM
1, 6, 20, 20
*SHELL SECTION,ELSET=BEAM,MATERIAL=BEAM
0.003,3
*MATERIAL,NAME=BEAM
*ELASTIC
2.17E11,0.3
*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.,0.,0.,1.
*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.,0.,0.,1.
*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, , 
*MODAL FILE
*EL PRINT,FREQUENCY=0
*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.,0.,0.,1.
*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, , 
*MODAL FILE
*EL PRINT,FREQUENCY=0
*END STEP