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Plate with hole, mechanics problem

  1. Sep 12, 2008 #1
    Hey, I'm trying to solve a little mechanics problem and I'm stuck.

    [​IMG]

    I want to find the maximum stress in the system. I know that it should be at the top and bottom of the hole. The plate is fully constrained at the left edge.

    I find the average tensile stress in section A:

    sigma = F/A = 2000N/(100-40)*2 = 1,67N/mm^2

    I also know that the stress distribution in section A is not even.

    Could someone give me a little hint?
    Thanks
     
  2. jcsd
  3. Sep 12, 2008 #2

    FredGarvin

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    Science Advisor

    You're missing a 0 on the thickness for the area calculation. Once that is taken care of, you need the stress concentration factor that will be a function of the width of the plate and the hole diameter. That will multiply the average stress to get your peak stress.
     
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