Homework Answers
Solution:
D = 1.5 in
d = 1.25 in
r = 0.12 in
D/d = 1.5/1.25 = 1.2
r/d = 0.12/1.25 = 0.096
From the graph of stress concentration factor of groove shaft subjected to tensile load.
Stress concentration factor = K = 1.9
Maximum stress = Smax = K P/ (pie*(d2)/4)
Smax = 1.9*4* 10300 / 3.14* (1.252)
Smax = 15947.07 psi : ANSWER
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