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Thread: bending moments

  1. #1

    Thread Starter
    Junior Member
    Join Date
    Feb 2001
    Posts
    16

    Unhappy bending moments

    Hi does anyone know of any code that will work out the reactions of simply supported beams, ive already worked out bending moments at supports but having difficulty with the reactions

    cheers in advance

  2. #2
    Lively Member
    Join Date
    Apr 2003
    Location
    Georgetown, Texas
    Posts
    114

    Simple beam reactions

    For a simply supported beam of length L feet, with a concentrated weight of weight W lbs, located at a distance d feet from the left support, and an evenly distributed weight of p lbs/ft, starting at a distance x1 from the left support, and stopping at a distance x2, the general equations for the left and right support reactions are:

    Right Reaction = W*d/L + p*(x2-x1)*(x1+x2)/(2*L)
    Left Reaction =W*d + p*(x2-x1) - Right Reaction

    Now, as to coding the above, you shouldn't have any trouble, I would think.

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