A material is known to have a fully modified endurance strength of 60 kpsi, a yield strength of 120 kpsi, and an ultimate tensile strength of 150 kpsi. A beam made of this material subject to repeated bending stress that goes from 0 psi to 110 kpsi. Using Gerber as our failure criterion a. Does the beam have infinite life? b. What is the equivalent fully-reversed stress? c. How many cycles do we expect this beam to last?

A material is known to have a fully modified endurance strength of 60 kpsi, a yield strength of 120 kpsi, and an ultimate tensile strength of 150 kpsi. A beam made of this material subject to repeated bending stress that goes from 0 psi to 110 kpsi. Using Gerber as our failure criterion a. Does the beam have infinite life? b. What is the equivalent fully-reversed stress? c. How many cycles do we expect this beam to last?

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter5: Stresses In Beams (basic Topics)

Section: Chapter Questions

Problem 5.6.13P: A two-axle carriage that is part of an over head traveling crane in a testing laboratory moves...

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