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Thread: Calculated shear stress, now what?

  1. #1

    Calculated shear stress, now what?

    I'm designing a sprocket/motor hub and I've calculated the shear on the shaft from the hub to the sprocket. But, just to be sure, you could check the math.
    Torque = 63.3 Nm
    Shaft O.D. = 19 mm
    Shaft I.D. = 13 mm
    Polar Moment of Area (J) = 9.99x10^9 m^4
    Radius = 9.5mm
    Material = Mild Steel (I know this is important but for now lets keep it super simple)

    Shear = (T * r) / J
    Shear = (63.3 * .0095) / 9.99x10^9
    Shear = 60 MPa

    Now what? Is 60 MPa a lot? I forget what I'm supposed to do with the that number.

  2. #2
    Administrator Kelly Bramble's Avatar
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    Quote Originally Posted by aakrusen View Post
    forget what I'm supposed to do with the that number.
    Compare to the material strength properties... Tensile, yield strength.

  3. #3
    Technical Fellow
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    ...and do some research on von Mises for the relationship between shear and tensile yields.

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