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Stress Analysis of Pulley

Stress Analysis of Pulley

Stress Analysis of Pulley

(OP)
What loads are needed, how should they be applied, and what is the proper approach to use to analyze a pulley? I have a solid model of the pulley and I'm trying to determine if plastic would be appropriate. I've been given the applied torque, hub load, and rpm. I also have the operating temperature. Thanks.

RE: Stress Analysis of Pulley

If you model something and the stresses are above yield and you need to know the post yield behaviour then use plastic material properties, if that's what you mean.

corus
http://www.corusresearch.com

RE: Stress Analysis of Pulley

(OP)
Actually, I wanted to make sure I applied the loads correctly. It is for a belt driven pulley, so I think the load which induces the torque is probably applied over some arc length. The belt tension also creates a total load that is reacted through the hub. I was wondering if others have modeled pulleys and can relate what are all the loads they used.  

RE: Stress Analysis of Pulley

Kunc,

There will be a tension, T1 on the slack side of the pulley and a tension, T2 on the tight side of the pulley.

Now the driving force on the pulley, Fce = T2-T1 and the torque on the pulley Trq = Fce x radius of pulley. The resultant pull on the pulley (trying to bend the shaft), assuming T2 is parallel to T1, Pull = T2+T1. If T2 and T1 are not parallel to each other, then take their horizontal and vertical components to find the resultant force on the pulley shaft.

Hope this helps,
Neilmo

RE: Stress Analysis of Pulley

(OP)
Thanks for the info. The pulley also has a high rpm, but the stresses induced on the pulley are small.

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