Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. GravyBagel

    Internal Loads on Pressure Vessel

    So a little update on this. We had previously spec'ed and built smaller vessels without considering loading of internals. This was done for decades with no issue, so I'm not going to try to rock that boat. The latest vessel is much larger, which is where my concern comes in. That being said, I...
  2. GravyBagel

    Internal Loads on Pressure Vessel

    My man! Thank you.
  3. GravyBagel

    Internal Loads on Pressure Vessel

    Section VIII Div 1, 2004 Edition A 05 Addenda is listed on the drawing.
  4. GravyBagel

    Internal Loads on Pressure Vessel

    ASME Boiler and Pressure Vessel Code (2004 Edition), with the exception of Sections III and XI.
  5. GravyBagel

    Internal Loads on Pressure Vessel

    Hmm, I suspect I wasn't very clear. We are placing steel tooling that is roughly the full water weight that the vessel will hold. That load is sitting on a ring resting against the head of the vessel. As the load ring is not perfectly matched to the vessel, there are also stress concentrations...
  6. GravyBagel

    Internal Loads on Pressure Vessel

    I work with several large pressure vessels. In operation, the vessel lids are removed and heavy tooling/materials are placed into the vessels (similar to a composite autoclave). I am not a pressure vessel engineer, but I am very concerned that the stresses applied by the tooling are not being...
  7. GravyBagel

    Angled/Extended Tolerance Zone

    So I didn't feel great about this solution. I don't like the idea of controlling directional tolerance based on an implied angle that a dimension is aligned with that doesn't actually call out an angle in some way. I had a chance to sleep on it. What about combining position, angularity, and...
  8. GravyBagel

    Angled/Extended Tolerance Zone

    That was something I was thinking about, but it didn't feel right, which is why I went down the path of multiple single segment controls. Is this what you mean or have I misinterpreted what you wrote? As always, thank you 3DDave, you've been very consistently...
  9. GravyBagel

    Angled/Extended Tolerance Zone

    I am seeking to angle a tolerance zone for a hole and extend it in that angled direction. For my purposes, the angular requirement is fairly tight, while the length requirement, not so much. The hole is being mated to a slot with a dowel pin. This is not my desired choice of frame, but it must...
  10. GravyBagel

    Slot GD&T

    Thank you 3DDave. This makes good sense. For the slots I as making, I ended up using a max material condition callout with different size tolerances on the width and length and this seemed an appropriate path forward. Seemingly, the bonus tolerance would only get applied in the direction of the...
  11. GravyBagel

    Slot GD&T

    I read this article by Bill Tandler and thought it was very interesting, but I wasn't satisfied with the solution. https://go.gale.com/ps/i.do?p=AONE&u=googlescholar&id=GALE|A328422062&v=2.1&it=r&sid=AONE&asid=fb82bcc4 With a linear slot that is aligned with the datum reference frame, would it...
  12. GravyBagel

    Unrelated Pattern with Multiple Feature Frames

    Thanks for your reply! To my knowledge (limited) a perpendicularity control is equivalent to a position control with a perpendicular datum. This is what I was shooting for with the second line of my fcf. Is this the case or am I mistaken? It seems that using a perpendicularity control alone...
  13. GravyBagel

    Unrelated Pattern with Multiple Feature Frames

    I am trying to get a series of holes put into a plate. The holes themselves must be reasonably perpendicular to the surface to allow for adequate bolting as they are threaded holes. The translational positions on the plate are not critical and they are not related to each other in any way. I...
  14. GravyBagel

    Symmetric Parts and Inspection of Features

    This is a test specimen. It is intended to be symmetric to produce good test results. Adding features is adverse to that goal. I suppose a superficial mark (paint/ink) would satisfy without violating the intent of the part. Thank you. @CTopher, I think you misinterpreted the question. A could...
  15. GravyBagel

    Symmetric Parts and Inspection of Features

    I'm working through something funny. I've got a long extruded rectangular (slightly off square) prism that is symmetric in X/Y/Z. I primarily care about the rectangular ends being perpendicular to the long sides and parallel to each other as these are measurement locations. I utilized two of the...

Part and Inventory Search

Back
Top