shear pin - hole size effect?
shear pin - hole size effect?
(OP)
We use a double slotted pin (pin pressed in another pin) to transmit torque between a shaft and gear. I'm trying to determine how much the press fit of the pin in the shaft and hub affects the shear stress in the pin. I know for thick body cylinders an inward pressure on the OD will cause shear stresses in the cylinder. What I'm having trouble with is whether those shear stresses add to the shear stresses the pin sees from torque. Any opinions?





RE: shear pin - hole size effect?
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RE: shear pin - hole size effect?
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RE: shear pin - hole size effect?
I'd think there would be some adding of the stresses caused by the radial compressive load and the transmitted torque. My 3d stress analysis is marginal though. I'm in the process of testing some pieces with different hole sizes.
RE: shear pin - hole size effect?
in double shear. As you posted that pins have to a good fit. The gap between the shearing edges has to be a close as practical, I used 0.001" One thing missed on on a lot of shear pin installation device is that the hole edge has to be square. Any radius of the hole edge will increase the scatter of the shearing strength values.
RE: shear pin - hole size effect?