Hi desertfox,
Thanks for the formula.
I'm working on a problem with a coil spring binding in the ID of its housing. The above formula is very helpful but do you have anything that would take material properties into account?
Cheers,
Ubergeek
I'm looking for the same formula, but I don't want to use it unless I know where it came from. Can you help me out with this? Is there a book I can reference or can you just derive or explain the equation? Also, I've heard that some spring materials contract as the deflection gets greater. Any insight into this? I appreciate any help I can get. Thanks.