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Stress and Strain Pressure Vessels

  1. Jul 6, 2017 #1
    1. The problem statement, all variables and given/known data


    [​IMG]

    E = 290 GNm-2
    Yield Stress = 500 MPa

    Q. What pressure would a strain of 40 με indicate?

    2. Relevant equations
    Hoop Strain. εθ = 1/E (σθ − νσz) = 1/E (pr/t − ν(pr/2t).


    3. The attempt at a solution

    I am looking for some direction on how to determine the poisson ratio with just the above information?

    Given that the above equation has 2 unknown values. If i assign a poisson ratio of 0.3 which would logically not be a bad decision- as most vessels are steel! Then i can easily solve the above for p

    But i prefer to understand a way of solving for V

    can anyone help ?
     

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    Last edited: Jul 6, 2017
  2. jcsd
  3. Jul 6, 2017 #2

    Nidum

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    There seems to be some information about this problem missing from your posting ?
     
  4. Jul 6, 2017 #3
    i was trying to insert a screenshot
     
  5. Jul 6, 2017 #4

    Nidum

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    Save it on your computer . Check that image is saved in a suitable format such as .jpg or .png . Then use the UPLOAD button bottom right of the reply box .

    Or just try pasting the image .
     
  6. Jul 6, 2017 #5

    Nidum

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    Last edited: Jul 6, 2017
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