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Homework Help: Find Shear Centre of Cross Sections

  1. Apr 26, 2012 #1
    Please Help.
    Trying my best


    1. The problem statement, all variables and given/known data

    Locate the Shear Center of the Cross Sections Below:

    1. http://tinypic.com/r/98xfd3/5
    2. http://tinypic.com/r/15s4hfk/5

    2. Relevant equations

    τ=VQ/IT


    3. The attempt at a solution

    1.
    Moment = O
    Solve for Ve


    τ=VQ/IT
    Solve for τ

    For each section
    V=∫τtdy

    Find I
    I=2(I1) + 2(I2) + 2(I3) I4
    solve for I
    solve for e


    Do not know how to start 2.
     
  2. jcsd
  3. Apr 28, 2012 #2
    For the circular part, consider a radius angle theta with the horizontal. Then consider an elemental length of the circumference delta s subtending an angle delta theta at the centre.
     
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