Same as Problem 1 except there is a stress concentration of 1.42 at the point of expected failure.
Problem 1
A bar with a machined surface with no stress concentration is subjected to a uniform tension with Pmax = 50,000 lb and Pmin = 20,000 lb. The material has σult = 90,000 psi with factor of safety equal to 1. 5. Use Fig. 2-26 to determine the endurance limit. Find the cross-sectional area required for safe continuous operation.
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