Calculating Torque Friction Between Pipes with Contact Pressure

AI Thread Summary
To calculate the contact pressure between two pipes, the formula used is contact pressure equals force divided by the product of diameter and length. Given the scenario with an internal PVC pipe and an external plastic pipe, both with a diameter of 50mm and a force of 1000N acting at the center, the contact pressure can be estimated. The discussion suggests that experimentation may be necessary to refine the calculations. There is also a query about how to submit the calculated figure, indicating a need for clarity on the submission process. Overall, the focus is on determining the frictional torque and understanding contact pressure dynamics between the pipes.
sadanand08
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I have two pipes inserted in each other .ID(internal pipe-PVC)=OD(external pipe-plastic)=50mm. They rub each other for 180 degree max in clockwise and anticlockwise direction, also slide by 80mm max (say in helical style). I wish to estimate the frictional torque consumed. I know the external cylinder has force in one direction @1000N acting at its center (at endcap).
 
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What is the contact pressure between the pipes? You can at least get a figure to start with, although I would suggest you start experimenting a bit.
 
ank_gl said:
What is the contact pressure between the pipes? You can at least get a figure to start with, although I would suggest you start experimenting a bit.

How to submit the figure?
 
How to submit the figure? Contact pressure=Force/(diameter*length). Is it the same?
 

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