Rotating Shaft Diameter
Rotating Shaft Diameter
(OP)
How would one approach calculating the minimum diameter of a rotating shaft if:
- it is initially spinning ~1-3k rpm
- it is decelerated at any moment when a generator is activated on one side (through a clutch mechanism)
Looking through Shigley's Mechanical Design book, I came across some shaft type calculations, but it does not seem to consider anything about rotational speed/acceleration... I am not sure if that should affect anything or not.
If you have any guidance, please share.
- it is initially spinning ~1-3k rpm
- it is decelerated at any moment when a generator is activated on one side (through a clutch mechanism)
Looking through Shigley's Mechanical Design book, I came across some shaft type calculations, but it does not seem to consider anything about rotational speed/acceleration... I am not sure if that should affect anything or not.
If you have any guidance, please share.





RE: Rotating Shaft Diameter
RE: Rotating Shaft Diameter
RE: Rotating Shaft Diameter
RE: Rotating Shaft Diameter
Depending upon the shaft length, you may also need to consider its critical speed and natural frequencies.
Good luck.
Terry
RE: Rotating Shaft Diameter
I am having trouble simplifying the shaft calculation. We have a handful of unknowns:
- 2 bearings - 4 unknowns
- forces from weight of main shaft
- forces from large component spinning with shaft (mid shaft)
- 2 components on ends of shaft giving us a torque and 2 reactions per component
- Can't forget inertia from shaft and large spinning component on midshaft
Looking back a resources such as Shigley and old notes from college.... I am having a hard time finding a way to simplify / approach this.