MECHANICAL ENGINEERING DES.(LL)-W/CNCT
MECHANICAL ENGINEERING DES.(LL)-W/CNCT
15th Edition
ISBN: 9781260531374
Author: BUDYNAS
Publisher: MCG
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Textbook Question
Chapter 1, Problem 18P

From See. 3-12, the maximum shear stress in a solid round bar of diameter. d, due to an applied torque. T, is given by τ max  = 16  T / ( π d 3 ) . A round, cold-drawn 1018 steel rod is subjected to a mean torsional load of T ¯ = 1.5 kN · m with a standard deviation of 145 N · m. The rod material has a mean shear yield strength of S s y ¯  = 312 MPa with a standard deviation of 23.5 MPa. Assuming the strength and load have normal distributions, what value of the design factor n d ¯ corresponds to a reliability of 0.99 against yielding? Determine the corresponding diameter of the rod.

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MECHANICAL ENGINEERING DES.(LL)-W/CNCT

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