Learning Forum

[ah05085]

file0.err.txt

[Erik Kostson]

Hello
Ansys employees can not open attachments (you could add the msg, inline in your next post if you would like us to see them).
Also can you provide some more info if you are using ANSYS apdl or Workbench mechanical - I would suggest to use WB as it is easier to learn especially if you are new to Ansys. And any other facts that might help.

All the best

Erik

[ah05085]

file0.err
/COM,ANSYS RELEASE 2021 R1BUILD 21.1UP2020110916:33:01

*** WARNING ***CP =0.766TIME= 16:33:03
Element shape checking is currently inactive.Issue SHPP,ON or
SHPP,WARN to reactivate, if desired.

*** WARNING ***CP =0.812TIME= 16:33:03
Make sure that the rotating element component 1 (component name
CM_ROTVE) is axisymmetric about the axis of spin defined by the
CMOMEGA command to correctly account for the gyroscopic effect in the
stationary reference frame (CORIOLIS, ON,,, ON).

*** WARNING ***CP =0.812TIME= 16:33:03
Make sure that the rotating element component 1 (component name
CM_ROTVE) is axisymmetric about the axis of spin defined by the
CMOMEGA command to correctly account for the gyroscopic effect in the
stationary reference frame (CORIOLIS, ON,,, ON).



*** WARNING ***CP =59.453TIME= 16:33:53
Material number 11 (used by element 4141) should normally have at least
one MP or one TB type command associated with it.Output of energy by
material may not be available.

*** WARNING ***CP =65.594TIME= 16:33:58
Material number 11 (used by element 4141) should normally have at least
one MP or one TB type command associated with it.Output of energy by
material may not be available.


*** WARNING ***CP =394.109TIME= 16:38:33
The number of frequencies is not the same for each load step.Make
sure the same number of modal solutions is obtained for each
rotational velocity.If it is the case but there are not always the
same number of complex frequencies with zero imaginary parts (zero
frequency), try using the Damped eigensolver (Method = DAMP on the
MODOPT command) with the negative frequencies option (keyNegFreq = ON
on the PRCAMP and PLCAMP commands).The PRCAMP command is ignored.

*** WARNING ***CP =394.609TIME= 16:38:34
The number of frequencies is not the same for each load step.Make
sure the same number of modal solutions is obtained for each
rotational velocity.If it is the case but there are not always the
same number of complex frequencies with zero imaginary parts (zero
frequency), try using the Damped eigensolver (Method = DAMP on the
MODOPT command) with the negative frequencies option (keyNegFreq = ON
on the PRCAMP and PLCAMP commands).The PRCAMP command is ignored.

*** ERROR ***CP =394.609TIME= 16:38:34
There are no data available related to the Campbell diagram.Please
issue the PLCAMP or PRCAMP command before issuing the *GET command.
This command is ignored.

[Erik Kostson]

As suggested see a course/video in ANsys for rotordynamics and try to do some simple models as in these videos:

[ah05085]

link for input write dat file https://docs.google.com/document/d/1JhXQ-GNUKs9Y3h10jNXfXFmSIviS0Ig4Xh543vRN9MQ/edit?usp=sharing

[Erik Kostson]

We are not allowed to open attachments - perhaps someone else can and will be able to help - again see the course shown above in order to get started with this type of analysis.

All the best and good luck

Erik

[ah05085]

I've performed this simulation before but after wiping my computer, downloading the most recent Ansys workbench & Mechanical Apdl 2021 R1 I'm now having a tough time getting Campbell diagram data.
"The error I'm getting is Campbell Diagram data is not complete. Please refer to ANSYS output file for possible causes." The following information is what I deduced after outputting the file from the solution branch (Write input file) and looking through the error file which says "there's no data related to the campbell diagram. Please use PLCAMP & PRCAMP commands before using *Get command. This message makes me believe I need to conduct solving the solutions with apdl commands.
I've been following closely this youtube video regarding ansys rotordynamic simulation. https://www.youtube.com/watch?v=XHDY6Z92GE4&t=607s

Here is a youtube video of my current situation. https://www.youtube.com/watch?v=OVofZGmcKbw

[alaa.falahat]

I have the same error any solution?