Hey guys, kind of a newbie at this Solidworks game, and im kinda stuck! (of course)

So basically I have this designed below, its already been manufactured and works great. I did some initial torque calculations, and used the Solidworks Motion to backup my calculations. I worked out I needed a motor capable of 82 newton-mm to get it up to speed within 60 seconds, but what I, nor did my solidworks motion estimation take into account, was air resistance. And so the motor I have driving it doesnt get it up to speed!

Is there any was of calculating the torque of a motor required to spin the ring up to its required speed, and take into account air resistance so I can source a motor with the required torque?

Thanks in advance guys

Oli

Unfortunately you would have to do a FlowSimulation to get an aproximate drag coefficient.

In motion you can put in a rate dependent torque for which you will need a drag coefficient. You may be able to find a drag coefficient fo a flat plate and apply it to the centroid of the outer rings.