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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
In Prob. 4.28, determine (a) the value of h for which the maximum stress σm is as small as possible, (b) the corresponding value of k.
Prob. 4.28
A portion of a square bar is removed by milling, so that its cross section is as shown. The bar is then bent about its horizontal axis by a couple M. Considering the case where h = 0.9h0, express the maximum stress in the bar in the form σm = kσ0 where σ0 is the maximum stress that would have occurred if the original square bar had been bent by the same couple M, and determine the value of k.

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