An open-coiled helical spring consists of 12 coils, each of mean diameter 60 mm, wire diameter 6 mm and helix angle 25°. An axial load of 120 N is applied to the spring. Calculate (a) axial de- flection, (b) bending and shearing stresses, and (c) axial torque which shall produce a bending stress of 50 MPa in the coils. Take E 200 MPa, and G = 84 GPa.

An open-coiled helical spring consists of 12 coils, each of mean diameter 60 mm, wire diameter 6 mm and helix angle 25°. An axial load of 120 N is applied to the spring. Calculate (a) axial de- flection, (b) bending and shearing stresses, and (c) axial torque which shall produce a bending stress of 50 MPa in the coils. Take E 200 MPa, and G = 84 GPa.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.5.6P: A solid circular bar of diameter d = 50 mm (see figure) is twisted in a testing maching until the...

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