Question about Shear Stress in Simply Supported Beam

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SUMMARY

In a simply supported beam subjected to uniform loading, there are no shear forces present at the free ends of the beam. This conclusion is based on the understanding that at the extreme ends, there are no vertical forces acting to create a shear force. The discussion confirms that the shear force only exists between the supports and not at the edges of the beam.

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  • Knowledge of uniform loading effects on beams
  • Basic principles of static equilibrium in structural analysis
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Master1022
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The scenario is: we have a simply supported beam, with the supports being an arbitrary distance inward from the outer edge of the beam (both are the same distance from their edges such that the beam is symmetrical about its centre). The beam also experiences uniform loading across the entirety of its length.

My question is: Will there be a shear force at the free end of the beam?
This is more about the concept, than about any calculations.

I was thinking that there won't be. I was imagining the left most section of the beam (from the edge to the first support). If you take a cut at the edge, there will be no vertical forces to balance. Would this be correct?

Thanks in advance.

P.S. this is not a homework question.
 
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Yes, you are correct. There are no shear forces at the very ends of a simply supported beam.
 
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Chestermiller said:
Yes, you are correct. There are no shear forces at the very ends of a simply supported beam.
Thank you
 

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