balancing

[streamm]

hi,
is it possible in Pro/MECHANICA to simulate the balancing of shaft in rotation? Here the case of non rigid body.
thanks

 

[pjw]

What do you want to simulate? I would use behavioral modelling to run an optimisation that places the centre of mass on the axis of rotation. Are you trying to look at the stresses in a rotation shaft or merely trying to balance it?

 

[streamm]

Sorry for delay to answer,
here is the situation...what I need is the feasability or not to simulate the beahaviour of shaft in rotation. the shaft is very longer (4000 mm) in such way to not neglect/ignore the force of its weight.

with mechanism, It is possible to make the shaft in rotation movement, but I cannot get the force effects du to the fact that this body cannot be considered as rigid (the body deforms because of the weight).

in mechanica, I can consider the weight force effects but not the ones du to rotation.
that'is all.

 

[Kaz Z06]

streamm,

It sounds like you need "rotor dynamics" capabilities. Mechanica does not possess this type of analysis. ANSYS can handle this type of problem.

 

[moriarty]

You can do basic Rotor Dynamics in Mechanica - you have to
apply rigid body velocity and accelerations to the shaft
that match the application.

From this you can establish the lateral natural frequencies
and by varying speed/accln get the shaft freq response with
speed.

Not sure what you can achieve with large displacement
behavior - maybe you have to model the deflected form.
Edited by: moriarty