Question

A steel machine component is modeled as a cantilever beam, length of L = 12.5 inches with round cross section, diameter of D = 1 inches. The material ultimate strength is Sut = 83 kpsi, the material yield strength is Sy = 70 kpsi, and the corrected endurance limit strength is Se = 29 kpsi. Consider the critical stress location as the front surface of the beam at the wall location. See image below. Two loads act on the machine component as one transverse load, Fz, acting at the end of the beam as a point load, and one torque, T, acting around the longitudinal axis. Load Type | Description | Value Transverse, Fz | Repeated | 500 lbf Torsion, T | Completely reversed | 1050 lbf-in REQUIRED: Determine the fatigue factor of safety for infinite life at location B, the front surface at the wall. Report your answer with two decimal places.

          A steel machine component is modeled as a cantilever beam, length of L = 12.5 inches with round cross section, diameter of D = 1 inches. The material ultimate strength is Sut = 83 kpsi, the material yield strength is Sy = 70 kpsi, and the corrected endurance limit strength is Se = 29 kpsi. Consider the critical stress location as the front surface of the beam at the wall location. See image below.

Two loads act on the machine component as one transverse load, Fz, acting at the end of the beam as a point load, and one torque, T, acting around the longitudinal axis.

Load Type | Description | Value
Transverse, Fz | Repeated | 500 lbf
Torsion, T | Completely reversed | 1050 lbf-in

REQUIRED:
Determine the fatigue factor of safety for infinite life at location B, the front surface at the wall. Report your answer with two decimal places.

A steel machine component is modeled as a cantilever beam, length of L = 12.5 inches with round cross section, diameter of D = 1 inches. The material ultimate strength is Sut = 83 kpsi, the material yield strength is Sy = 70 kpsi, and the corrected endurance limit strength is Se = 29 kpsi. Consider the critical stress location as the front surface of the beam at the wall location. See image below.

Two loads act on the machine component as one transverse load, Fz, acting at the end of the beam as a point load, and one torque, T, acting around the longitudinal axis.

Load Type | Description | Value
Transverse, Fz | Repeated | 500 lbf
Torsion, T | Completely reversed | 1050 lbf-in

REQUIRED:
Determine the fatigue factor of safety for infinite life at location B, the front surface at the wall. Report your answer with two decimal places.

Added by Elena N.

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