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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:
    AL_zps46bd4df3.png

    2. Relevant equations



    3. The attempt at a solution
    I end up with something like this:
    BM1_zps5c818fe9.png

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

    Thanks
     
  2. jcsd
  3. Apr 5, 2013 #2

    SteamKing

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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

    PhanthomJay

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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
    working_zps5831d800.png
     
  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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