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1340_Mechanics Homework Mechanics of Materials Solution

1340_Mechanics Homework Mechanics of Materials Solution -...

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Unformatted text preview: 11.44 The state of stress shown occurs in a machine component made of a grade ‘ | PROBLEM 11.44 of steel for which air = 65 ksi. Using the maximum-distortion—energy criterion, 1 5 determine the factor of safety associated with the yield strength when (a) as: -"- + 16 C} ksi, (b) a, = - 16 ksi, E" SOLUTION [7:] “(J (61—61.): + (65-62? + (6; — <1? = «gig (a) 6;= 65, = Ia. us; D (I8.sc+io.sc)‘+ (-10.56-Ic)‘+ (16- 13.50‘ = 2 (f-f; I 847517 4- 705,93 + 6.55 =' $55—30: R5. = 133 U 6c = 63 = 4:. ks; U 7 (18.5c+:o.56)1+ (-10.54;“ #02 + (4643-54 )2 "' 2 6%): 347.677 + 29.59 + ”94.39 = (:31 E E5. "-' 2.02 ...
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