Monday, February 14, 2011

Material Properties

Hi Everyone.. I have begun some research of Tea houses... and will post about my findings soon.
Also, as per Professor Ellinger's suggestion, I think it is important to understand the properties of the material that we will be using.



Does anyone know the exact type of 6mm plywood that we will be using? Will other materials be available to use as jigs, forms or other parts? what type of glue/fastenners are available? or should we explore ways to minimize fastenners (different types of connections)?
Will this be similar to the material we will be using? (Baltic Birch? 5 ply?)
Also, what is the size of the sheets?


Has anyone taken a basic structural engineering course? In my program, I have, but have never encountered any calulations/values for the forces, moments and stresses for plywood. If we find the limits of the material, we will know what is possible for the design. Values that might be helpful are maximum compression, tension, bending, shear, and torsion... although im sure we may need to do a certain amount of experimentation...

3 comments:

  1. Hi, Rodney.

    Maybe, type of plywood is lauan which is the cheapest ply wood.
    We can use jigsaw, drill and driver.
    We will buy bolts, screw and glue.
    But I don't like glue because it cannot disjoint.

    Mr. Toyoda said that we can buy sub-materials; (for example, plastic sheet) if we want.


    Simulation for structure is useful, but I think wood is difficult to simulate.
    We should experiment to make some mock-up.
    I also want to simulate wood structural behavior.


    Sorry, I late for upload my idea and research.
    I will upload soon.

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  2. Thanks Akinori, the screen I sent out in an email was actually luan as well. it is a cheap but fairly durable material.

    As far as testing, I think empirical testing will be best. In other words trial and error. How much deflection can a piece 100mm wide by 1m long take before breaking? How many degrees of twisting will it take? same for 2m, 3m, etc.? And then maybe 50mm wide, until we have a catalogue of basic tolerances we can program into code or algorithm.

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  3. Will we be using the "C" grade or "O" grade of Luaun plywood? ... im not sure if it will matter, but it might...

    Im not sure if i will be able to get some luaun for testing, but i will try my best.

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