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A solid round steel bar has a 6 mm diameter hole drilled through it. The bar is subjected to a load P that fluctuates fr
Posted: Mon May 09, 2022 9:57 am
by answerhappygod
- A Solid Round Steel Bar Has A 6 Mm Diameter Hole Drilled Through It The Bar Is Subjected To A Load P That Fluctuates Fr 1 (87.35 KiB) Viewed 22 times
A solid round steel bar has a 6 mm diameter hole drilled through it. The bar is subjected to a load P that fluctuates from 0 KN to 400 KN. For the material, Su = 400 MPa, a fully corrected fatigue endurance limit Se = 200 MPa, fatigue strength fraction f= 0.9 at 109 cycles, and fatigue stress concentration factor K;= 2.0. Using the Modified-Goodman fatigue line (a) Estimate the fatigue factor of safety, nf based on achieving an infinite life. (10 points) (b) If an infinite life is not predicted, estimate the number of cycles to failure, N. (10 points) 6mm hole Р - 60 mm