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Homework Help: Bending Moment Distribution

  1. Apr 5, 2013 #1
    1. The problem statement, all variables and given/known data

    Derive the bending moment distribution of the beam:

    2. Relevant equations

    3. The attempt at a solution
    I end up with something like this:

    Im abit concerned with the profile, should it taper to zero? Any thoughts?

  2. jcsd
  3. Apr 5, 2013 #2


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    Did you draw a free body diagram of this beam? Did you construct a proper shear force curve? Do these things and you will arrive at the correct bending moment curve.
  4. Apr 5, 2013 #3


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    Moment should be zero at free end.
  5. Apr 5, 2013 #4
    Yes I did by making a cut in the beam. I'll post up my equations
  6. Apr 5, 2013 #5
  7. Apr 5, 2013 #6
    If anyone's interested, I simply forgot to subtract q2 from the q1 terms in the expression
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