Solving a Mechanical Engineering Problem: AISI 1020 HR Steel Shaft

AI Thread Summary
The discussion revolves around analyzing the stress state of a 1.00-inch diameter AISI 1020 HR steel shaft subjected to multiple transverse loads, moments, and torques. The critical point of interest is just to the left of point B, where the user seeks to understand how stress at point C influences stress at point B. The complexity arises from the presence of multiple loads rather than a single moment or torque. The response emphasizes the importance of calculating the sum of all bending moments and torques at the point of interest to determine the equilibrium condition. This approach is crucial for assessing whether the shaft will fail under the given loading conditions.
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Hey. This is my first post, I'm a Senior in Mechanical Engineering, I will help others as far as I can.

I'm trying to solve the problem from the picture. The shaft is loaded with 2 transverse loads, 2 moments and 2 torques. The critical point is immediately to the left of "B". The material is AISI 1020 HR steel. The shaft has a diameter of 1.00 inch. I'm trying to figure out if the shaft will fail.

As of now I've figured out that I have to obtain the general stress state at point B. My question is, how does the stress at point "C" affect the stress at point "B"??

If there was only 1 moment and 1 torque affecting point "B", that would be an easy problem, but having the other stress is confusing me.

Any ideas?

THAKS!
 

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Are you concerned about the fact that your shaft is accelerating like a bandit?
 
The shaft is pinned at A and D. Thanks for your reply!
 
Then why is there a problem? What you need is the sum of all bending moments at the point of interest, not just the moment applied at that point, and the sum of all torques, not simply the torque applied at that point, where you calculate the equilibrium condition for an element at that location.
 
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