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Static coefficient of friction between copper or brass
I'm using yield clamping force which calculates to be 12315 lb force- Platanus3
- Post #7
- Forum: Mechanical Engineering
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Static coefficient of friction between copper or brass
OK. If then, what is the realistic safety factor I should apply? The result seems too high. For 1.500-12UN-2A (and 2B), I get like 2771 ft-lbs of torque. Yield strength I used is 45,000 psi (Copper alloy)- Platanus3
- Post #5
- Forum: Mechanical Engineering
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Static coefficient of friction between copper or brass
Sorry for the late response. Pitch is 0.0833 inch because the threads belong to unified fine thread (1.500-12UN-2A and -2B) Thread angle is 60 degree (I believe a standard value), so I used alpha value of 30 degree in Motosh equation. My machinery handbook tells me to calculate the yield...- Platanus3
- Post #4
- Forum: Mechanical Engineering
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Static coefficient of friction between copper or brass
Hello all I'm trying to calculate a torque needed to tighten a threaded terminal. (Both male and female parts are copper alloy) I'm using Motosh's equation which requires me to use the coefficient of friction. Web sources tells me that the copper-copper coefficient of friction is 1.0. The...- Platanus3
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- Coefficient Coefficient of friction Copper Friction Static
- Replies: 8
- Forum: Mechanical Engineering