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Bending moment and Shear Force

  1. Jun 1, 2015 #1
    Do bending moment and shear forces are dependable on a beam's cross sectional area?
  2. jcsd
  3. Jun 1, 2015 #2


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    They do not.

    The bending moment is the integral of the shear force curve, and the shear force curve is the integral of the load curve of the beam.

    http://en.wikipedia.org/wiki/Shear_and_moment_diagram {See the section "Relationships between load, shear, and moment diagrams"}
  4. Jun 1, 2015 #3
    Very much thank you to you sir! I was wondering that we're not given any of those cross sectional details when we're asked to draw SFD and BMD. So that's a kind of a hidden tip ;)
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