Thermal clamping of a ring: clamping force 1

[drir]

Hi,

I want to machine the inside of a copper ring. Therefore, I want to clamp the ring (diameter 25 mm, length 6 mm) around its outside by making aluminium clamping part. By heating the aluminium clamping part, assembling the ring in the clamp and cool down, both are fixed. My question is: how can I calculate the clamping force if the outer diameter of the ring is slightly bigger than the inside diameter of the aluminium clamp?

Thanks

 

[desertfox]

Hi

Try this link and example 8.28 once you have the stress values you can calculate the force

http://www.scribd.com/doc/58681195/78/THERMAL-STRESSES-IN-COMPOUND-BARS

 

[drir]

Thx! That is what I was looking for.

 

[desertfox]

Hi drir

Your welcome

 

[drir]

Sorry desertfox, but when I had a closer look to the example it is was not what I was looking for.
However, I found it here:

http://www.faculty.fairfield.edu/wdornfeld/ME311/PressCylinderHam.pdf

 

[desertfox]

hi drir

I think you might find that both analysis will lead to the same conclusion when you apply the negative temperature gradient i.e. cooling.

desertfox