A helical spring is made by wrapping steel wire 20 mm in diameter around a forming cylinder 18O mm in diameter. Compute the number of turns required to permit an elongation of 180 mm without exceeding a shearing stress of 140 MPa. Use G=83 GPa.

A helical spring is made by wrapping steel wire 20 mm in diameter around a forming cylinder 18O mm in diameter. Compute the number of turns required to permit an elongation of 180 mm without exceeding a shearing stress of 140 MPa. Use G=83 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 3.11.10P: Compare the angle of twist 1 for a thin-walled circular tube (see figure) calculated from the...

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Question

A helical spring is made by wrapping steel wire 20 mm in diameter around a forming cylinder 18O mm in
diameter. Compute the number of turns required to permit an elongation of 180 mm without exceeding a
shearing stress of 140 MPa. Use G=83 GPa. Use the first equation of shearing stress under helical spring.

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