A helical compression spring is made of a specialty alloy wire with a wire diameter d = 4 mm and an inner coil diameter Di = 18 mm. For this type of alloy and specified wire diameter, the shear yield strength is 715 MPa and the modulus of rigidity is 77.2 GPa. If the spring has 9 active coils, determine the factor of safety nd when the spring deflection is 7 mm.

A helical compression spring is made of a specialty alloy wire with a wire diameter d = 4 mm and an inner coil diameter Di = 18 mm. For this type of alloy and specified wire diameter, the shear yield strength is 715 MPa and the modulus of rigidity is 77.2 GPa. If the spring has 9 active coils, determine the factor of safety nd when the spring deflection is 7 mm.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter1: Tension, Compression, And Shear

Section: Chapter Questions

Problem 1.9.13P: A metal bar AB of a weight Ills suspended by a system of steel wires arranged as shown in the...

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