*HEADING
CASE A, C3D8I,CENTRIF
*RESTART,WRITE
*NODE
**
**
*NGEN,NSET=FIXED
*NGEN,NSET=AUSSEN
*NGEN
*ELEMENT,TYPE=C3D8I
*ELGEN,ELSET=BRICK
*SOLID SECTION,MATERIAL=MAT,ELSET=BRICK
*MATERIAL,NAME=MAT
*ELASTIC
2.17E11,0.3
*DENSITY
7850.,
*BOUNDARY
FIXED,1,3
*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
BRICK,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
BRICK,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, ,
*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
BRICK,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, ,
*EL PRINT,FREQUENCY=0
*MODAL FILE
*END STEP