Engineering & Analysis Methods > Bolted Joints

BJSFM Single Shear Correction Factor & Bearing Allowable

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James:

--- Quote from: samoashworth on May 06, 2015, 05:32:03 AM ---One more question - during the BJSFM analysis I get a warning "warning: a/Diameter Ratio <4 (=3.00)".  I have based my a and b to be equal to 3d where my diameter is 4.5mm based on HyperSizer recommendations that finite width is typically 3d.

Is it acceptable for my a/Diameter ratio to be <4, i.e. is it acceptable for this warning to contradict the 3d finite width recommendations?

Thanks for your help in advance,
 :)

--- End quote ---

The a/Diameter should be = 3 for the best BJSFM results. This is considered the "effective width" of the laminate that is affected by the presence of the hole.

The 4D ratio warning is just letting you know that you may need to include an e/D correction. This warning has no direct impact on the HyperSizer BJSFM results.

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