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  1. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    Thanks, The analysis system is not up to creating the required compound curves so I'm trying a two stage process, modelling the plates and...
    Post de: David Eager, 11 Aug 2016 în forum: Locomotive M.I.C.
  3. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    Does anybody have drawings of a Diagram 118 boiler? The model above is based loosely on a welded variant LNER Type 100A boiler but I haven't got...
    Post de: David Eager, 6 Aug 2016 în forum: Locomotive M.I.C.
  4. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    After a few frustrating software crashes (20 year old software) I've managed to put together some different stay support variants for the front of...
    Post de: David Eager, 4 Aug 2016 în forum: Locomotive M.I.C.
  5. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    This is a first attempt at swing stays. It's taken a few hours to get the model to work after modifying it and the results are partly nonsensical...
    Post de: David Eager, 3 Aug 2016 în forum: Locomotive M.I.C.
  6. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    It's an old FEA package called Mechanica. The company that wrote it was taken over by PTC. I have a pretty old version from when I used to work...
    Post de: David Eager, 2 Aug 2016 în forum: Locomotive M.I.C.
  7. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    [ATTACH] Something like this? Definitely worth doing and I will have a go but might take a few days to get a sensible model. Looking at the...
    Post de: David Eager, 1 Aug 2016 în forum: Locomotive M.I.C.
  8. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    This is the full boiler model showing distortion exaggerated 25 fold. The picture shows a half section viewed from inside. [ATTACH]
    Post de: David Eager, 30 Iul 2016 în forum: Locomotive M.I.C.
  9. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    I have to admit to being suspicious of the stay that appears to be in compression as well. I've plotted consecutive alternate central crown stays...
    Post de: David Eager, 30 Iul 2016 în forum: Locomotive M.I.C.
  10. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    It is possible to look at the loads on individual stays in the model shown above. I chose a couple that I thought might be most affected by...
    Post de: David Eager, 28 Iul 2016 în forum: Locomotive M.I.C.
  11. David Eager
    Post

    Boiler design & construction ex Patriot thread.

    [ATTACH] "Finite element analysis may well allow better understanding and design of boilers. Does your analysis include for the effects of...
    Post de: David Eager, 28 Iul 2016 în forum: Locomotive M.I.C.
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