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  1. hhamza

    fatigue analysis of bolts

    Am i interpreting Division 2, part 5 correctly that when using bolts in a cyclic operation, the maximum number of cycles is 1E6? I get this from table 3-F.9. The values in 3-F.8 (at the 13.5 KSI and 5.3 KSI limits) also confirm this. Does this mean I can't have any bolted connections if my...
  2. hhamza

    Section VIII, Div 2, component vs assembly level FEA

    To some extent. I can estimate an axial load due to the pressure on the flange and apply that to the pipe. However, there are other interactions that would be missed. e.g. Flange could provide some stiffness that my component level FEA wouldn't take into account
  3. hhamza

    Section VIII, Div 2, component vs assembly level FEA

    When doing an analysis per Div 2, part 5, is it acceptable to do the FEA on each component separately or does it need to be done on the entire assembly at once? For instance, say I have a pipe with two bolted on blind flanges on either end. Can I perform FEA on the pipe, flanges, and bolts...
  4. hhamza

    Section VIII, Div 2, Appendix 5C, non linear portion of temperature distribution

    I don't have access to PTB-1 unfortunately. I haven't really looked at 5.5.4. Any reason you would recommend using that method instead? Thanks,
  5. hhamza

    Section VIII, Div 2, Appendix 5C, non linear portion of temperature distribution

    I'm having a couple of issues with this part of the code. Equation 5-C.5, Tp is asking you to add a function (T) with a scalar. Additionally, they're asking you to add a temperature (Tavg) with a Temp per inch value (2Tb/t). Am i missing something? Any clarification with this portion of the...
  6. hhamza

    Irregular shapes under Section VIII, Div 1?

    I don't really understand your first point. My previous post is completely unrelated to this question (other than the fact they both deal with section viii, division 1).
  7. hhamza

    Irregular shapes under Section VIII, Div 1?

    I'm trying to create a calculation package for a pressure vessel that does not have a standard shape (i.e. not a shell, hemisphere, conical, etc.) Is there a way to perform this calculation under Division 1 rules? For instance, if I can fit a hemisphere entirely inside my part, can I design it...
  8. hhamza

    ASME SECTION VIII, DIV 1, FIGURE UG-37.1 FORMULAS

    Does anyone know/have a source for deriving the formulas for area reinforcement? Are the limits of reinforcement (UG-40(b) & UG-40(c)) calculations already taken into account in the formulas given? thanks,

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