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  1. #1
    D.C.'s Avatar
    Lives in Birmingham, United Kingdom. Last Activity: 05-01-2016 Has been a member for 4-5 years. Has a total post count of 326. Received thanks 27 times, giving thanks to others 24 times.
    I've come across a few interesting papers on machine design that other people might find a useful source of ideas for new builds:

    Excellent and lengthy paper detailing a heavy duty design:
    http://www.mech.utah.edu/~bamberg/re...e%20Design.pdf

    Structural dampening to reduce vibrations:
    http://mdrl.mne.psu.edu/papers/IntegratedApproach.pdf
    equations to determine most effective means of layer damping with different geometries - Thanks Tenson.
    http://www.dtic.mil/dtic/tr/fulltext/u2/a088200.pdf

    Mechanical properties of wood composites (mdf/ply etc):
    http://www.fpl.fs.fed.us/documnts/fp...chapter_12.pdf

    Patent application: Improved damping of cast iron for machines:
    HIGH RIGIDITY, HIGH DAMPING CAPACITY CAST IRON - Patent application

    Optimum column design using honeycombs:
    http://www.iaeng.org/publication/WCE...p1941-1947.pdf
    Last edited by D.C.; 02-11-2012 at 08:27 AM.

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  3. #2
    I've read the first one before - there's a lot of good information in that paper, particularly the bit about optimising a gantry design at the end.
    Old router build log here. New router build log here. Lathe build log here.
    Electric motorbike project here.

  4. #3
    D.C.'s Avatar
    Lives in Birmingham, United Kingdom. Last Activity: 05-01-2016 Has been a member for 4-5 years. Has a total post count of 326. Received thanks 27 times, giving thanks to others 24 times.
    You might be interested in the second one aswell as you have a steel box section machine. The vibration damping seems to be massively improved by filling with pipes wrapped in damping tape and concrete compared to a plain concrete fill.

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  6. #4
    moved to the FAQ's, Problems & Solutions and given a better title.

    Nice post DC thanks !
    .Me

  7. #5
    Great info, though a lot of the first paper went over my head! :)

    I'm pleased to see constrained layer damping is effective; I thought it might be a good way to go.

  8. #6
    Quick glance looks like there is some seriously heavy reading there so a lot will probably go straight over my head if I can't remember what I learnt all those years ago lol
    Looks like a good find for those that will be able to understand it all though. I did learn enough to realise that I may need to rethink things, looks like my cardboard & selotape machine may have a few faults.

  9. #7
    D.C.'s Avatar
    Lives in Birmingham, United Kingdom. Last Activity: 05-01-2016 Has been a member for 4-5 years. Has a total post count of 326. Received thanks 27 times, giving thanks to others 24 times.
    Me too, I'm still being a bit of a dunce and can't find any material for muppets like me to bridge the math gap so I can understand how to apply the maths correctly myself but I can at least look at the pretty pictures. :)

    I've just downloaded z88 so I can play with some FEA software, if I can outsource the clever bits to the computer I'm hoping I can get away with tweaking designs based on pretty colours...

  10. #8
    Another interesting paper here, showing equations to determine most effective means of layer damping with different geometries.

    http://www.dtic.mil/dtic/tr/fulltext/u2/a088200.pdf

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    fnm

  12. #9
    D.C.'s Avatar
    Lives in Birmingham, United Kingdom. Last Activity: 05-01-2016 Has been a member for 4-5 years. Has a total post count of 326. Received thanks 27 times, giving thanks to others 24 times.
    Thanks Tenson, I added it to the original post so people won't have to read through pages of forum posts to get to the documents, is that ok?

  13. #10
    No problem, I just wish I could understand the paper better, lol!

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