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Applying a Bending Moment to a Plate with Forces

  1. Dec 8, 2009 #1
    I'm using FEA to simulate an in plane bending moment on a plate.

    The moment is 200Nm, and the plate is 80mm tall.

    Do I simulate the forces on the edge in situation (a) or situation (b)? It's a seemingly simple question, but people have put doubt in my head, I hoped a fresh mind might help. The length of the arrows represents magnitude, the arrow head represents direction. Shown is the right edge of the plate... That should cover everything.

    (a)
    |---->
    |--->
    |-->
    |->
    |<-
    |<--
    |<---
    |<----

    (b)
    |->
    |-->
    |--->
    |---->
    |<----
    |<---
    |<--
    |<-

    A swift answer would be massively appreciated. My brain is frazzled right now.
     
  2. jcsd
  3. Dec 8, 2009 #2
    The first one is the stress distribution of a moment, assuming the directions are correct.
    Basically, the stress is greater as you move away from the central axis, and is 0 at the central axis (assuming pure moment).
     
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