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  1. DarrellW

    Stress Singularity

    clsang, I'm not an FEA mathematician so I have to go along with what the the Post Hole Diggers in the profession say about it and hope I understand enough to get along. To make a long story short, I tend to think of 90 degree FEA joints with no fillet as places where the continuity equations...
  2. DarrellW

    Applying Bolt Head-Clamped Part Friction

    Vonlueke, what assumptions have you made to achieve such accurate and unambiguous numbers? I dare say the list is a pretty long one. In a real world where K varies from .11 to twice that value (at least), for you to state your bolt formula without qualification is frightening. Bolt material, nut...
  3. DarrellW

    cyclic loads on a beam

    I, too, do not understand your question. If you already know that 20 kN delivers 5mm displacement and visa versa, then what are you looking for in your FEA? What does 5 cycles have to do with it? If you are looking for stress to evaluate ultra-low cycle fatigue, then wouldn't either input would...
  4. DarrellW

    What Level of Theretical Knowledge do FEA Analysists Need?

    "...every problem is different and the greatest advantage is having a great intuition for physical component behavior." Set that in bold type and put it at the top of the page! The rest you can get with time and a Mastercard, but if this priceless capacity is not in your genes to...
  5. DarrellW

    Elbow

    Goodwishes, I'm still a novice ANSYS user, but I'm wondering if you have considered these: First) Have you input your moment properly as a couple (+F, -F, at distance L)? Second) Are your constraints at pipe end placed on the end "area"? If so, you may be getting singularity error at...
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