Hello everyone
I'm trying to do free and forced vibration analysis of a beam which rotate around of its ends with an angular velocity using ANSYS apdl 19.2.
How can I define the angular velocity and the radius of rotation in ansys in order to do the analysis ?
Dear Mohamed,
To define the angular velocity and the radius of rotation for a rotating beam in ANSYS APDL, you can try to use the following steps:
1. To define the reference frame for the rotating beam. This reference frame should be centered at one of the ends of the beam and should have its z-axis aligned with the beam's axis of rotation.
2. To define the angular velocity of the beam. You can do this using the "D" command, which defines the angular velocity of a reference frame in terms of the angular velocity of a different reference frame. For example:
*D,REF,BEAM,WBEAM
This command defines the angular velocity of the reference frame "REF" in terms of the angular velocity of the reference frame "BEAM". The "WBEAM" parameter specifies the angular velocity of the beam in rad/s.
3. To define the radius of rotation of the beam. You can do this using the "C" command, which defines the position of a point in terms of the position of a different point. For example:
*C,P1,P2,X,Y,Z
This command defines the position of point "P1" in terms of the position of point "P2", with the "X", "Y", and "Z" parameters specifying the displacement of point "P1" from point "P2" in the x, y, and z directions, respectively.
To define the radius of rotation of the beam, you can use a "C" command to define the position of the end of the beam in terms of the position of the center of the beam. The radius of rotation will then be equal to the distance between the center of the beam and the end of the beam.
For example, if the center of the beam is at the origin and the end of the beam is located at (0, R, 0) in the reference frame of the beam, you can use the following "C" command to define the radius of rotation:
*C,END,CENTER,0,R,0
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