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Curved beam stress calculation problem

  1. Jul 29, 2012 #1
    1. The problem statement, all variables and given/known data

    Calculate stress in a curved beam and compare with FEA model.

    2. Relevant equations

    Stress = (M*(r-rn))/(Aer)

    3. The attempt at a solution

    I used the above formula, which is repeated in many text books and reputable engineering websites, to calculate stress in a curved beam. My result was 9.5 MPa, but the FEA result was over 500 MPa (see attached image).

    I've checked my calculations and I'm convinced I haven't made a mistake. I really do not know why there is such a large disagreement between my calculations and the FEA result. I have repeated the FEA process several times and in different ways but the disagreement is constant.

    If anyone knows what is going wrong here please tell me!
     

    Attached Files:

  2. jcsd
  3. May 28, 2017 #2
    Hello Aertsz

    I have a same problem with you.İn Curved Beams there is something I can not achieve.My Hand Calculation is 12 MPA My Ansys result is 400 MPA.If you found the reason or solution please share me?

    My email: tehc21@gmail.com
     
  4. May 29, 2017 #3

    Nidum

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    Science Advisor
    Gold Member

    This is an old thread . Best to start a fresh one .

    Please post full information about the problem in the new thread and show us your attempt at calculations .
     
  5. May 29, 2017 #4

    Nidum

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    Science Advisor
    Gold Member

    nb : Showing Email addresses openly on forum is not advisable . Delete yours asap .
     
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