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  1. somebodyfromworld

    ACT extensions for Ansys

    Hey, I came across some ACT extensions for Ansys that seem pretty useful. They cost a bit, though, but might be worth it if they save you time. Check them out here: https://www.sigmacalx.com/act_extensions
  2. somebodyfromworld

    Diametral Strain in Pressure Vessel depending on its length

    Hi I'm trying to find the best way to calculate the radial expansion of the pressure vessel with a variable length. Please take a look at the image I've for better explanation of my issue. I have three test cells that have the same dimensions with only length different. Identical internal...
  3. somebodyfromworld

    Fatigue assessment DIV2, DIV3

    Is anyone here who can share an Excel spreadsheet with fatigue calculation formulas based on ASME BPVC VIII-2 or -3
  4. somebodyfromworld

    ASME div2 Fatique Screening

    Hi I've been asked to prepare a fatigue screening for ALLOY 718 / UNS N07718. I usually use ASME Part 2 to calculate allowable stress for fatigue screening but a client wants me to use API 17TR8, where allowable stress is found by 2/3 Sy. ASME gives me a value of 206MPa for N07718 but API 17TR8...
  5. somebodyfromworld

    Material or a device changing its shape under pressure

    Hi there, I'm looking for some solid material that can change its shape or geometry under pressure. Let's say i have a solid piece of a sample with a diameter 10mm and length 100mm. The sample is placed in a pressure chamber and pressurised from 0 to 2000bar. Every 50bar the sample is being...
  6. somebodyfromworld

    S420 Structural Steel UNS equivalent

    Basically the title is my question. I cant find the UNS equivalent to these two materials S420 Structural Steel and Strenx® 700 Structural steel I need to find the UNS equivalents for those two materials in ASME II Part D. Any help would be appreciated BR, Sergey
  7. somebodyfromworld

    How can I simulate bolt pretension

    How can I simulate bolt pretension in this connection. Yellow and Green parts are tightened with 120Nm at the same time yellow part is pushing grey part towards green making a sealing connection in between. When the connection is tight I have to apply internal pressure to check that the sealing...
  8. somebodyfromworld

    How to locate contact and target elements in Ansys

    Hi folks how to actually find those connections. I got some warnings and really want to find them. The warnings are> *** WARNING *** CP = 157.422 TIME= 12:26:16 Contact element 59090 (real ID 31) status changes abruptly from contact (with target element 59018)...
  9. somebodyfromworld

    Compatibility of Ansys Structural

    Hi there I have a task to check the maximum pressure to push the ball thru. The license I have is only to do a Structural Analysis and not any dynamics. So my question is it possible to push the ball through the apper part using pressure and find out the maximum value for it to pass the...
  10. somebodyfromworld

    AISI 4140 110ksi

    Hi ASME II part D has a material G41400 with 80YS/100TS. This material is listed with de-rating factors at temperatures. Can I use the same de-rating percentage but for G41400 which was hardened to 110YS/135TS
  11. somebodyfromworld

    Drilled holes thru the pressure vessel side along the length

    Hello, Is there any specific chapter in ASME BPVC VIII regarding these kind of holes. Please take a look at the enclosed simplified sketch. Pressure vessel looks like a cylinder with two caps threaded into it. I have to make two holes through the cylinder along its length and i'm not sure how...
  12. somebodyfromworld

    Shear stress or more

    Hi there I've got a task where i need to use manual calculations with this setup (see attach.) there is a cylinder with two internal grooves (yellow part). 5 Dogs are equally spaced (72deg.) inside that cylinder. They are being pushed by the Force against the grooves in the cylinder. What...
  13. somebodyfromworld

    Restart control

    Hello people Could anyone of you explain how to use restart control options for combining two different loads: 1. at first load step the construction should move 0,2mm 2. then it is subjected with a pressure Please look at the pictures with the setting, there is a test cell. Green and Red...

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