How do i calculate shear stress on a Key and a bolt?

[Sean Trainor]

I have been attempting the Solidworks Simulation certification but keep just missing out by a few marks and I believe these questions are the main ones which are killing me.

I haven't done these calculations in years and I've been lost with how to do the hand calc's. Any help would be appreciated.

 

[Nidum]

Q11 : This was covered in : https://www.physicsforums.com/threads/what-is-shear-stress-on-the-key.888213/#post-5586968 .

Assume that the diagram is misleading and that @JBA's suggested method is correct .

Q12 : Shaft torque = 8 x Force acting on anyone bolt x radial distance to shaft axis .

Shear stress then is worked out in similar way to Q11

Try doing these calculations and show us your workings .

 

[DrClaude]

These should be posted in the homework forum, one question per thread, with a proper attempt at a solution.

Thread closed.