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Homework Help: Shear stress eqn

  1. Jul 26, 2006 #1
    http://www.savefiles.net/d/ieiwoixnjfw.html [Broken]

    Can anybody pls write for me the shear stress eqn using singularities or heaviside function in which i have attach the in the file above

    pls help

    thanx
     
    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Jul 26, 2006 #2
    This is the homework help, not the do your homework forum. :grumpy:
     
  4. Jul 27, 2006 #3

    Pyrrhus

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    Looks like standard procedure to me?, on what exactly are you stuck?
     
  5. Jul 28, 2006 #4
    the equation for the middle part where the joint forces between the upper and lower force.Should i write 2q<x-l>^0 or any others??
     
  6. Jul 28, 2006 #5
    Taking downward direction as a positive direction, the load density function should be

    [tex]q(x)=q_{0}-q_{0}(x-l)^0-q_{0}(x-l)^0=q_{0}-2q_{0}(x-l)^0[/tex]

    Note that the [tex]q_{0}[/tex] is contributed by the upper distributed force, the first [tex]q_{0}(x-l)^0[/tex] is to diminish the effect of [tex]q_{0}[/tex] at position along the beam [tex]x=l[/tex] while the second [tex]q_{0}(x-l)^0[/tex] is the lower distributed force that acting in an upward direction, which means the negative direction here by convention.


    Then, proceed to find [tex]V(x)[/tex] and [tex]M(x)[/tex]. Finally, draw the shear and moment diagrams.
     
    Last edited: Jul 28, 2006
  7. Jul 28, 2006 #6
    ok.........thanx
     
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