/COM,ANSYS MEDIA REL. 2024R2 (05/10/2024) REF. VERIF. MANUAL: REL. 2024R2
/VERIFY,VM47
/PREP7
/TITLE, VM47, TORSIONAL FREQUENCY OF A SUSPENDED DISK
C*** VIBRATION THEORY AND APPLICATIONS, THOMSON, 2ND PRINTING, PAGE 10, EX 1.3-2
ANTYPE,MODAL
MODOPT,LANB,1,,,
ET,1,COMBIN14,,,1 ! THREE-DIMENSIONAL TORSIONAL SPRING
ET,2,MASS21,,,3 ! TWO-DIMENSIONAL MASS WITH ROTARY INERTIA
R,1,4.8 ! REAL CONSTANT SET #1 SPRING CONSTANT
R,2,1,.30312 ! REAL CONSTANT SET #2 MASS & IZZ(J)
N,1 ! BEGIN NODE DEFINITION
N,2,,,-1
E,1,2 ! DEFINE BEAM ELEMENT
TYPE,2 ! DEFINE ACTIVE ELEMENT TYPE AS SET 2
REAL,2 ! DEFINE ACTIVE REAL CONSTANT TYPE AS SET 2
E,2 ! DEFINE MASS AT END OF WIRE
OUTPR,BASIC,1
D,1,ALL ! CONSTRAIN END OF WIRE IN ALL DOF
D,2,UX,,, ,,UY,UX ! PREVENT TRANSLATION OF THE MASS
FINISH
/SOLU
SOLVE
*GET,FREQ,MODE,1,FREQ
*DIM,LABEL,CHAR,1,2
*DIM,VALUE,,1,3
LABEL(1,1) = ' F,'
LABEL(1,2) = ' (Hz) '
*VFILL,VALUE(1,1),DATA,.63333
*VFILL,VALUE(1,2),DATA,FREQ
*VFILL,VALUE(1,3),DATA,ABS(FREQ/.63333 )
/COM
/OUT,vm47,vrt
/COM,------------------- VM47 RESULTS COMPARISON ---------------
/COM,
/COM, | TARGET | Mechanical APDL | RATIO
/COM,
*VWRITE,LABEL(1,1),LABEL(1,2),VALUE(1,1),VALUE(1,2),VALUE(1,3)
(1X,A8,A8,' ',F10.5,' ',F14.5,' ',1F15.3)
/COM,-----------------------------------------------------------
/OUT
FINISH
*LIST,vm47,vrt