Shear force and bending moment diagrams

  • Thread starter Stacyg
  • Start date
  • #1
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Hi. The question is:
Draw the shear force and bending moment diagrams for the simply supported beam shown below. State the values of the greatest shear force and bending moment, and the bending moment at D.
The diagram is attached as is my attempt at the answer. I hvae not stated the values of greatest shear force, bending moment or shown the bending moment at D as I am not sure how to do this.
Also with my Bending moment diagram I am not sure if I have started it right.
Any help would be great thanks.
 

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Answers and Replies

  • #2
30
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It's been awhile since Ive done this but hopefully I can help a little.

I can't read your SFD too well, but to solve for the bending moment at D..

Take moments from point A

Ma = 0 kn . mm
Mb = 0 + (Length x Width on your SFD)

The bending moment at D will be Mc + (Bound area from C-D)

Labeling the points on your SFD should help you out with this.
 

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