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.
aortucre
Messages
14
Reaction score
0
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!
 

Attachments

  • 2012-04-20 13.07.52.jpg
    2012-04-20 13.07.52.jpg
    17.5 KB · Views: 527
Engineering news on Phys.org
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.
 
How did you find PF?: Via Google search Hi, I have a vessel I 3D printed to investigate single bubble rise. The vessel has a 4 mm gap separated by acrylic panels. This is essentially my viewing chamber where I can record the bubble motion. The vessel is open to atmosphere. The bubble generation mechanism is composed of a syringe pump and glass capillary tube (Internal Diameter of 0.45 mm). I connect a 1/4” air line hose from the syringe to the capillary The bubble is formed at the tip...
Thread 'Physics of Stretch: What pressure does a band apply on a cylinder?'
Scenario 1 (figure 1) A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material. The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm). At this level of stretch, the load cell reads 45N tensile force. Key numbers...
I'd like to create a thread with links to 3-D Printer resources, including printers and software package suggestions. My motivations are selfish, as I have a 3-D printed project that I'm working on, and I'd like to buy a simple printer and use low cost software to make the first prototype. There are some previous threads about 3-D printing like this: https://www.physicsforums.com/threads/are-3d-printers-easy-to-use-yet.917489/ but none that address the overall topic (unless I've missed...
Back
Top