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  1. Alekos91

    ASME-FEA: Peak stresses

    First of all thank you for your answers. After your last post, the question seems to be in which way can someone check if the unconvergence is due to a numerical cause or a physical one? Moreover, should I change the convergence settings of the FEM programe (here ANSYS) so that I make the...
  2. Alekos91

    ASME-FEA: Peak stresses

    Hi TGS4, Yes I am using von Misses stress to find the 'most dangerous' cross section and actually I do the stress linearization for more than one 'dangerous' cross sections. The evaluated membrane stresses (local or general) are under the limits of the code at any section. As for ratcheting...
  3. Alekos91

    ASME-FEA: Peak stresses

    Hello, I run a FEM analysis with ANSYS Workbench on a steel thin disk-plate (please see pic.). The check for the structural integrity of the disk is according to ASME codes Sec.VIII div 2 Part 5 (I assumed the codes could be applied even if my component is not a pressure vessel...), but I am...
  4. Alekos91

    Thin metal circular disk-FEM results reliability

    Ok. I think I understood some things deeper. 1)I runed a non-linear analysis and I got a contour with the plastic strain one with the stresses. But how can I now decide if the plastic area is big enough to cause the failure of the disc? Is there an upper allowable limit for the plastic strain...
  5. Alekos91

    Thin metal circular disk-FEM results reliability

    Thank you for your post but I have some questions: 1)What is the meaning of ''fatigue'' analysis as long as I have a static load, not a dynamic one? 2) What do you mean exactly by ''artifice of the linear FEA''
  6. Alekos91

    Thin metal circular disk-FEM results reliability

    Thank you corus for your answer. You made it clear in my mind. Do you have any idea of which code is appropriate for such an application? P.S. The disk is actually the rotor of an AFPM electric generator of a smal wind turbine.
  7. Alekos91

    Thin metal circular disk-FEM results reliability

    Hello, I use ANSYS Workbench for mechanical stress analysis of a thin metal circular disk (Diameter=700mm, Thickness=10mm) with some air gaps and a hole in the center (please see pics) subjected to bending. The results that I get for the equivalent von-Misses stress show me that in a very small...

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