Actually, it's for a bimetallic temperature element. In short, a very complex thermostat spring.
Imagine a thin, narrow, and very long piece of sheet metal. Now that that strip of metal and coil it into what looks like a drinking straw. Then take that drinking straw and bend it into a helix. As temperature increases, helix expands axially; as temperature decreases, helix contracts axially.
I need these XYZ data points to create a curve in my CAD package that I can create the solid model from to throw into our FEA package to size the original piece of sheet metal.
Although using it in car suspension would be fun. Could you imagine the maintenance?
Huh! They were also very prone to low frequency oscillation that made them wallow like barges - the old Citroen's were the only vehicle of any kind (so far) to make me ill - and vehicles includes boats, subs, light aircraft(+/- g!), gliders and fast cars.
That's exactly what I'm looking for. If I may ask, though, what are your graph settings. I've been having a few problems with mine looking correct even when I know the data is correct. Needless to say, my graph is just a garbled bunch of lines and I would like to clean it up.
On 10/9/2003 10:49:24 AM, swertel wrote: >That's exactly what I'm >looking for. If I may ask, >though, what are your graph >settings. I've been having a >few problems with mine looking >correct even when I know the >data is correct. Needless to >say, my graph is just a >garbled bunch of lines and I >would like to clean it up.
You need to set the type of the second plot to "Scatter plot". It comes up as "Surface plot" by default. Also, in the appearance section check "Lines" and uncheck "Draw points".
The solution proposed above assumes that the plane of the spiral is vertical, which is not quite as satisfactory as having the plane of the spiral being perpendicular to the helix axis. This second case is illustrated below.