Does anyone know of a calculation for wire twist? What we are trying to figure out is for a particular size and number of wires, what twist will create a certain diameter or when will the diameter start to increase for a particular pitch.
Twist would thicken a bundle. Calculating the minimal diameter of a circular package of circles of different diameters is not easy. An elegant analog computer that can do it is the following:
Get glass marbles with diameters proportional to your wires, 1 marble for each wire.
Get a conical funnel with a stopcock leading out at the bottom. Fill it with mercury (poison!) and float the marbles on the mercury surface. Gradualy pour out mercury and watch the marbles draw closer. When marbles start popping up - stop and add some mercury to get back to a flat bunch of marbles.
Take a perpendicular photo and scale to size.
This process can probably be fairly easily be simulated on a computer.
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Yes, the normal is 7 wires of the same size create a circle of a given diameter. The porblem we get is when you impart a twist of a certain pitch to the bundle, what diameter does it come out to, or to maintain a certain size what is the twist (pitch) we can apply. Appreciate your help though.
"I am NOT smart enough to know that I can't do it!"
Do you have any measured results for this increase?
I'm imagining that, after you have twisted the wire bundle, if you were to look at a section through it each individual wire would look elliptical because it is now at a slight angle. If you were to feed the major elliptical diameter back into the enclosing circle calculation would that correlate with the results you observe?
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Wire twist calculations
Re: Wire twist calculations
