Wall thickness calculation based on contact pressure
Wall thickness calculation based on contact pressure
(OP)
Hello,
I'm working on a force transmission calculation where a 22mm diameter pin is assembled into a 24mm diameter hole. If you visualize a 22mm circle within a 24mm hole, the pin is pushed radially by a certain force so it pushes against the wall of the hole. Can anyone please help me calculate the required wall thickness around the 24mm dia hole to withstand this force? I can calculate the contact pressure at the interface, but how do I use that to arrive at the wall thickness needed? Or will a simple calculation of equating the allowable stress to the force divided by the load bearing area (determined by multiplying the depth of the hole by the wall thickness) suffice?Thanks for any help you can provide.
I'm working on a force transmission calculation where a 22mm diameter pin is assembled into a 24mm diameter hole. If you visualize a 22mm circle within a 24mm hole, the pin is pushed radially by a certain force so it pushes against the wall of the hole. Can anyone please help me calculate the required wall thickness around the 24mm dia hole to withstand this force? I can calculate the contact pressure at the interface, but how do I use that to arrive at the wall thickness needed? Or will a simple calculation of equating the allowable stress to the force divided by the load bearing area (determined by multiplying the depth of the hole by the wall thickness) suffice?Thanks for any help you can provide.
RE: Wall thickness calculation based on contact pressure
In addition to the pressure force, D_1, D_2 and length of cylinder L are the parameters.
But you need to check the tearing of plate (with hole) under tensile load also to check with the member failure stress.
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RE: Wall thickness calculation based on contact pressure
Yes, I realize I'll need to check for the tearing of the plate. My question is, how? Do I take the calculated contact pressure and put it into thick/thin (depending on wall thickness) cylinder equations to estimate the hoop stress? Will that suffice? And lastly, will the thick/thin cylinder theory hold good for this kind of loading?
Thank you,
Abhi
RE: Wall thickness calculation based on contact pressure
Engineers, think what we have done to the environment !https://www.linkedin.com/in/goutam-das-59743b30/
RE: Wall thickness calculation based on contact pressure
ASME BTH-1 has formulas/ criteria for pinned connections that you could use.