A bar of steel has the minimum properties Se= 40 kpsi, Sy = 60 kpsi, and Sut = 80 kpsi. The bar is subjected to a steady torsional stress of 15 kpsi with an alternating torsional component of 15 kpsi and an alternating bending stress of 12 kpsi. Find the factor of safety guarding against a static failure, and either the factor of safety guarding against a fatigue failure or the expected life of the part. For the fatigue analysis use: Goodman criterion.

A bar of steel has the minimum properties Se= 40 kpsi, Sy = 60 kpsi, and Sut = 80 kpsi. The bar is subjected to a steady torsional stress of 15 kpsi with an alternating torsional component of 15 kpsi and an alternating bending stress of 12 kpsi. Find the factor of safety guarding against a static failure, and either the factor of safety guarding against a fatigue failure or the expected life of the part. For the fatigue analysis use: Goodman criterion.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.6.10P: A prismatic bar with a length L = 1 m and cross-sectional area A = 1200 mm2 is supported at the...

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