Frequency response of a rotating system at a given speed

Simulation Generality
1

Hello

 

I have a system that looks roughly like helicopter  blades (a rotating axis with two elements on either side) and that rotates at 7500 rpm.

I have already obtained the first natural frequencies of the system which are independent of the rotational speed.

I am now trying to know the response and constraints of my system at a fixed rotational speed.

How to do it? I exported my frequency analysis to a harmonic dynamic analysis but I can't apply a given rotation to my axis.

Thanks in advance;)

 

Marty

 

2

Hello

Probably some interesting information here:

https://www.youtube.com/watch?v=dOBHWjn5pgw

At the 59th second, we see the options pages (see in the Harmonic section?).

And see also the second part:

https://www.youtube.com/watch?v=83Yv8N4MwBA

Edit: a page from the official SolidWorks blog on the subject:

http://blogs.solidworks.com/solidworksblog/2014/05/effectively-running-a-harmonic-analysis-in-solidworks-simulation.html

 

3

See also this discussion:

https://forum.solidworks.com/thread/34079

The first message contains an example file!

 

And see also:

what do you want to learn?

 

- in motion you would turn something at a certain speed, the output would be how much power it takes to turn it

- in frequency analysis, you are determining the natural frequency of the assembly to avoid resonance issues

- in dynamic analysis, you are using the systems natural frequencies to determine displacement and stress responses to an input

https://forum.solidworks.com/thread/80911