Moment Units-Force To Turn
Moment Units-Force To Turn
(OP)
I was tasked with finding the value required to turn something. I selected materials for all of the components in question and found the moment of inertia. The axis this will be spinning on is Z, now I just need to know which value is the value I am looking for. Is it 'Iz' or 'Ixy' (or something else), and are the units indeed:
Moment; PoundForceInch; lbf-in; pound force-inches
...If I had selected lb-in as my units?
It seems like the Mass Moment of Inertia is really what I am after, and I can find the units exist for it, but how do I force NX7.5 to show me THIS value?
Not to often I have do anything beyond finding the center of mass (in this realm), so go easy on the terminology.
Thanks,
KLINE
Moment; PoundForceInch; lbf-in; pound force-inches
...If I had selected lb-in as my units?
It seems like the Mass Moment of Inertia is really what I am after, and I can find the units exist for it, but how do I force NX7.5 to show me THIS value?
Not to often I have do anything beyond finding the center of mass (in this realm), so go easy on the terminology.
Thanks,
KLINE





RE: Moment Units-Force To Turn
This number by itself won't tell you how much force you need to turn something. F=ma; to find the force you will need to know what angular acceleration you want (ignoring friction).
RE: Moment Units-Force To Turn
RE: Moment Units-Force To Turn
I kind of think the Moments of Inertia listed in the information window are indeed Mass Moments of Inerita with the Unit Name PoundMassInchSquared (Display Name: lbm-in^2) as you specified. Is this correct? It would be nice if they read 'Mass' somewhere in the name.
I believe this is the only number I must specify. Thanks again.
Regards,
KLINE