A material in the as-rolled condition tests σult = 110,000 psi and σyp = 85,000 psi. Stress concentration factor 1.2; q = 1.0; factor of safety 1.75.
(a) Find the required cross-sectional area if the part carries a steady tensile load of 20,000 lb.
(b) Find the area required if the load is varying continuously from 19,000 lb to 21,000 lb and the endurance limit is found from Fig. 2-26.
(c) Find the area if the load is varying continuously from 18,000 lb to 22,000 lb.
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