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  1. Hurricanes

    Mechanically induced residual stresses passed to a thermal analysis

    Hi, I was hoping someone might be able to point me in the right direction to find resources on how to do a mechanical to thermal analysis in Ansys. Basically I want to yield and permanently deform a steel pipe in the transient mechanical solver, resulting in a solution with residual stress...
  2. Hurricanes

    Tank inlet nozzle location

    Is there any engineering/hydraulic reason for putting the inlet to a tank at its base? A friend works at a processing plant, and the consulting engineers designing a new processing circuit have put the inlet to a tank at its base. Liquid is pumped into the tank, theres a check valve to prevent...
  3. Hurricanes

    Pressure Surge and MAOP

    We have a pipeline and there is a pressure surge due to fast valve closure. A dynamic hydraulic analysis has been done to determine the magnitude of the resulting pressure surge. So far so good. Now, I always though the next step was to take the pressure surge, put it into pipe stress software...
  4. Hurricanes

    Gender Based Hiring Quotas in Australia

    So... I work for a large-ish consultancy in Australia. Recently they have introduced quotas. 50% of new hires must be female. Also, as there is a lack of female representation in senior positions, preference must be given to a female rather than a male when promotion time comes around. I think...
  5. Hurricanes

    Two Phase Flow Textbooks

    Hi all, Can anyone recommend a good textbook or books that deal with two phase flow? Steam-condensate is what I am mainly looking for, but any gas-liquid flows are of interest to me. The fluid and thermo texts I have are a bit too basic, only touching on two phase flow without going into any...
  6. Hurricanes

    Residual stresses in roped bends

    We have an above ground oil line made from linepipe. Along the pipelines run there are multiple roped bends. One of the roped bends has a bend radius smaller than the others. When the stress in the pipe due to bending the pipe into place is calculated, it is found to be significant. I am...
  7. Hurricanes

    Pressure as a function of coordinates

    Is there a straight forward way of varying a pressure or force in workbench mechanical such that the pressure/force is described by an equation containing one or two spacial coordinates? I can put in a normal pressure as a function of one of x, y or z, but I want a normal pressure as a function...
  8. Hurricanes

    Tank designed to British Standards from the 60s

    Hi, I am looking at a storage tank orginally designed in the 1960s to BS2654. I have BS2654, but I am struggling to find the specifications of the steel used. On the drawings plate to BS13 or BS15 is called for. I am chasing the yield strength of the plate to check what the orginal design stres...
  9. Hurricanes

    Connecting line to surface bodies in design modeler

    Hi, I have a simple cylindrical column which I have modeled as a surface body. Protruding normal out of this column I have a line body which represents a beam. I can't for the life of me work out how to join the two bodies so they will be reconised as connected when the model is meshed up...
  10. Hurricanes

    Interface with Structural Engineers

    I am quite interested in the cross-over between pipe stress and structural engineering. For 'fun' I am modelling up a pipe rack in Staad with the intent of importing it into AutoPipe and seeing what happens. What kind of interface do you have with the structural guys? Do you give them non-code...
  11. Hurricanes

    Amount of condensate formed of start up

    Can anyone point me in the right direction on how to calculate the amount of condensate generated on start up of a cold pipeline. I have superheated steam being piped 800 odd metres. I need to calculate how much condensate is going to be produced on start up assuming a cold pipeline...
  12. Hurricanes

    Analysis approach

    I have a bit of a personal interest problem I am hoping some of you guys can help me out with. I am mainly a piping guy, my pressure vessel knowledge is distinctly lacking (so forgive me if any of the following is stupid). I was reading an old report (~3 years old) produced by my company on...
  13. Hurricanes

    Non-linear analysis of a buckling cylinder

    I am currently trying to solve a localised buckling problem in a cylindrical piece of equipment modelled using plate elements. The buckling comes about due to a combination of thermal effects and eccentric loading on the cylinder. When I run a linear static and a linear buckling analysis I...
  14. Hurricanes

    Pipe finite element

    Can anyone point me to, or explain in some detail the theory of pipe elements and how they are used in pipe stress software? I know the basic formulation from the beam on elastic foundation theory, but I am curious to see how piping programs such as AutoPIPE and Caesar use this to get the...
  15. Hurricanes

    Hot Spring (and pipe stress analysis)

    I am currently doing a pipe stress analysis on some steam piping. The as built drawings show cold spring and it amount, but also shows hot spring in some areas. Now I am well aware of cold spring and how to analyse it, but I have never come across hot spring. I had a quick glance through my...
  16. Hurricanes

    Tresca, Von Mises and Luder bands

    I recently managed to get hold of a copy of 'Design of Piping Systems' by the M W Kellogg company. In the chapter relating to strength of materials, it discusses yield conditions, detailing both the Tresca and the von Mises yield conditions. Where it got interesting for me was the discussion...
  17. Hurricanes

    Engineers and CAD

    I am curious about engineers general relationships with CAD across various industries. Personally, I have been involved in the energy, industrial and mining sectors. In all cases I had not touched CAD. It is seen as a waste of resources for an engineer to use CAD when you can get a...
  18. Hurricanes

    Structural vs. Mechanical

    I have a small problem at work. It seems that FEA is percieved to be the preserve of structural engineers. What really gets me is work which in my mind is the domain of mechanical engineers, such as pressure vessel design and heat transfer problems, goes to the structural engineers. I don't...

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