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  1. Abhiram G J

    Wall thickness calculation based on contact pressure

    The pin is hardened alloy steel (AISI 52100) and the plate with the hole is 65-45-12 ductile iron. They yield at 295 ksi and 45 ksi respectively. This is my exact setup: The force pushing a pin of 0.625" diameter against a hole of 0.651" diameter is 610.1 lbf with a 0.375" length of contact...
  2. Abhiram G J

    Wall thickness calculation based on contact pressure

    An update on this. I had my assembly set up and analyzed by FE. The stress at the contact turned out to be 513 MPa (74000 psi). The stress using the thick walled cylinder calculation was 414 MPa (60000 psi). Simple pin joint & the ASME BTH-1 calculations give stresses almost 10 times lower than...
  3. Abhiram G J

    Wall thickness calculation based on contact pressure

    Goutam, thank you for your reply. 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...
  4. Abhiram G J

    Wall thickness calculation based on contact pressure

    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...

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