Question

1) A helical compression spring is wound using music wire of diameter, $d = 2.64$ mm. The spring has an outside diameter, OD, of 33 mm with plain ground ends and 14 coils. a) Estimate the spring rate. b) What is the force needed to compress this spring to closure assuming that the spring will reach its shear strength at its solid length? c) What should be the free length to ensure that the torsional stress does not exceed the yield strength when the spring is compressed solid?

          1) A helical compression spring is wound using music wire of diameter, $d = 2.64$ mm. The
spring has an outside diameter, OD, of 33 mm with plain ground ends and 14 coils.
a) Estimate the spring rate.
b) What is the force needed to compress this spring to closure assuming that the spring
will reach its shear strength at its solid length?
c) What should be the free length to ensure that the torsional stress does not exceed the
yield strength when the spring is compressed solid?

1) A helical compression spring is wound using music wire of diameter, d = 2.64 mm. The
spring has an outside diameter, OD, of 33 mm with plain ground ends and 14 coils.
a) Estimate the spring rate.
b) What is the force needed to compress this spring to closure assuming that the spring
will reach its shear strength at its solid length?
c) What should be the free length to ensure that the torsional stress does not exceed the
yield strength when the spring is compressed solid?

Added by Jared P.

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