3 diameter coil spring
3 diameter coil spring
(OP)
I've got this coil spring with 3 different outside diameters (see the attachment). The wire size is constant. I know all the dimensions and have a load at one length. The transition between the two smaller diameters is pretty small, the bigger transition bothers me. Can I assume the rate will be constant at fairly small deflections? Will I get a reasonable approximation if I calculate the rate of each straight section and add them the way I would add serial capacitance?
The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.





RE: 3 diameter coil spring
Any tapered spring is nonlinear.
You treat it as (n) one-turn springs in series, i.e., the forces are equal,
until the largest diameter spring reaches coil-bind, at which point it ceases to be effective, so the rate of the overall spring goes up, and you recurse as next largest coil binds and is removed from the length summation, etc.
Mike Halloran
Pembroke Pines, FL, USA
RE: 3 diameter coil spring
The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.