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Shive Wave Machine

  1. Apr 18, 2013 #1
    Hello everyone,
    I am taking a course called project 102 which based on doing projects and it its mandatory if you want to study engineering. Even though I want to study Manufacturing Enginnering all projects related to it was taken so i was left with this "Build your shive wave machine" project.
    It is basically a wave demonstration machine which actually looks pretty cool. We are supposed to build one with our project group which concludes of 2 people who wants electric electronics and 3 manufacturing. Long story short none of us is thinking or skilled in mechanichs so we need some help doing this machine. We found a video ----> which is very helpful but still we dont know the components of the machie. I even learnt SolidWorks a bit if I need to draw to rod but eventually we found out piano strings (?) can bu used for its base. Any help would be appreciated . Also I didn't know which level of physics this goes in to so I'm writing it on basic. Sorry if it is in wrong place. Thanks for any help :)
     
    Last edited by a moderator: Sep 25, 2014
  2. jcsd
  3. Apr 18, 2013 #2

    CWatters

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    Last edited by a moderator: Sep 25, 2014
  4. Apr 18, 2013 #3
    Well this not " THE" Shive Wave Machine, we did some basic models using chopsticks and duct tape but we are supposed to do a fully functional, made out of metal shive wave machine. And we did a lot of googling and we couldnt find much instead of a single article which says that there should be 1.25 cm between rods so we are searching for more academic resources. But still thanks for your help :)
     
  5. Apr 18, 2013 #4

    CWatters

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    Isn't the whole idea to design it yourself rather than copy an existing design?

    The distance between the rods won't be the most critical factor. It will be the mass of the rods and the stiffness of the torsion bar. When I suggested piano wire I meant try that for the center torsion bar as well as the rods. Very cheap and quick to knock up a 1m long prototype or two until you get the wire guage right.
     
  6. Apr 18, 2013 #5

    CWatters

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  7. Apr 18, 2013 #6

    CWatters

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    This also looks helpful but I haven't found a free copy..

    http://www.deepdyve.com/lp/american...room-torsional-wave-machine-part-i-QwIH3Yx5Zk

    Making waves: A classroom torsional wave machine (Part I)
    Kenneth D. Skeldon, Janet E. Milne, Alastair I. Grant, and David A. Palmer

    Phys. Teach. 36, 466 (1998)

    Abstract

    We present a recipe for constructing a torsional wave machine and discuss its role as a teaching aid, developing the physics of design and operation as we go along. In this article, which forms the first installment of a two-part paper, we cover the dynamics of the wave machine, concluding with construction details of a machine with theatre-scale presence. In developing the design physics, we allude to many interesting demonstrations and experiments that can be performed; these will form the content of our companion article next month.
     
  8. Apr 18, 2013 #7
    Thank you CWatter, technically we are supposed to build different types of wave machines to learn what affects what and how but since we are not interested in mechanics we talked to our project supervisor and he said just give me a fully fuctional model and get an A or work hard give me a half working model and get an A . Your choice. So we decided to try it at first but we really are not into that stuff so we decided to go for the machine to finish the project. Thanks for the help :)
     
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