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posted by  bluebutterfly152 on 9/17/2008 4:57:17 PM  |  status: Live  

shear and moment diagram

Course Textbook Chapter Problem
Mechanics of Materials N/A N/A N/A
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posted by Cacing on 9/18/2008 12:47:25 AM  |  status: Live
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 ΣMB = 0  : VA*L +PL = P*L/2   => VA = -P/2
 ΣMA= 0  : VB*L = PL + P*L/2   => VB = 3P/2
 control : Σ V = 0 : VA + VB = P => -P/2 + 3P/2 = P (ok)
 


for 0 x1 L/2
   Mx1 = VA*x1 = -P/2 *x1
     for x1 = 0      => Mx1 = 0
     for x1 = L/2  => Mx1 = -PL/4
  Qx1 = VA = -P/2

for 0x2L/2
   Mx2 = VB*x2 = 3P/2*x2
    for x2 = 0       => Mx2 = 0
    for x2 = L/2   => Mx2 = 3P/2 * L/2 = 3PL/4
  Qx2 = VB = 3P/2
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