shaft analysis

[zirtapoz]

? am using cosmosworks and cosmosmotion.

Can you explain me the method of shaft analysis for a simple system like a (one radial load at the middle and two bearing)

cosmosw is a static analyser. And cosmosmotion is rigid body analyser. Are they solution for shaft analysis.

i think, importing the max. loading in a 't' time to cosmosw from cosmosmotion is not accurate.

 

[cbrn]

Hi,
no, it's not suitable for what is normally meant by "shaft analysis". It may help in getting close to that in only a very specific situation, I believe:
rigid rotor on flexible supports, in the real domain.
In fact, CW lacks the calculation of the gyroscopic matrix and - as far as I know - can't do calculations in the complex domain, so critical speeds extraction is impossible and so is the calculation of complex eigenforms (like those you have with fluid-film bearings).
In CM, you can examine dynamic effects (and, as far as I know, gyroscopic effects are calculated) but you are limited to rigid bodies (so you won't find critical modes of a flexible shaft).

As a conclusion, I'd definitely drop CW+CM for shaft dynamics and rather look at a dedicated program for this: MADYN and XLRotor are two of these (I personally work with MADYN 4.2 kernel).

Regards