Learning Forum

[Nikunj Panchal]

Hello all,

I have the measurement data for Operational Vibration measurement for rotor running at different speeds e.g. 5000 rad/s, 10000 rad/s etc. and I want compare that to the simulation. 

 

In the simulation I am using remote force to generate the Imbalance in the rotor and applying that for different frequencies. 

 

Now I want to make sure that the force that is being applied in the simulation is for the speed of 5000 rad/s. 

 

And I want the simulation to run for the range of 2000 to 10000(Because the measurement data that I have is for this range), which i can change in the Analysis settings by changing the range. I have already seen the documentation regarding this, there was a method using synchro command and also using the frequency sweep via variational technology Method, but I don’t think that really helps me in this situation and it doesn’t really clarify the doubt that I have.

 

Now the doubt that I have is

 

(1) I want to run the simulation between the range of 2000 to 10000 so I will have to provide the data for the force generated between this range, but the force that I want to apply is for a constant speed. So if I apply a different force for different frequencies that will increase the amplitude of force as well resulting in the increase of deformation amplitude. 

 

So do I have to apply the same force for the whole frequency range? Or just apply the force at that specific frequency?

[Rahul Kumbhar]

Hi Nikunj,

You should be able to define different force at different frequency. There is option to define force as tabular loading.