Shear Force V and Bending Moment M Diagrams

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Shear Force (V) and Bending Moment (M) Diagrams

• You should have seen this in Statics!

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Designing Beams

• Need to know the state of stress at all the
  different points in the beam.
• If the beam has a uniform cross-section the
  section modulus is useful for design purposes.

Section modulus
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The plot tells us what the shear force V, and
bending moment M are for a cross-section.

When oriented this way, these quantities are
plotted positive.
Right end Left end
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Lets do the Statics!
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Show B J animation
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(No Transcript)
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5.1
Do Statics to find reactions at A and C. Do
Statics with length x to determine equations
for V, and M.
x
x
V
x
M
x
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5.4
Do Statics to find reactions at A. Do Statics
with length x to determine equations for V, and
M.
x
V
x
M
x
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Do Statics to find reactions at C.
5.20
Appendix