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316_Mechanics Homework Mechanics of Materials Solution

316_Mechanics Homework Mechanics of Materials Solution - 1...

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Unformatted text preview: ] 1 4.32 A portion of a square bar is removed by milling, so that its cross section is as PROBLEM 4-32 shown. The bar is then bent about its horizontal diagonal bya couple M. Considering the case where h = 0.9}:o , express the maximum stress in the bar in the form 0,, # kq, O , where 00 is the maximum stress that would have ocem-red if the original square bar had been bent by the same couple M, and determine the value of k. i i i E SOLUTION I = LII, + 21‘ = (Will: h3+(2\(—;—)(2h,—2m(h3) J 1 J =ék"+%hok3-§hw =§h,k3_w ] l J J f i J l l | For Hie original? .57qu h=in° ) C: i1. -. “—3.??— __. 3M 60 — (Liho‘sbo) ital. has 6 has ha __ :— _ _______n r 2 so Who-SHIN“ (Lilac—(3}(ofllhoXofihf) 0'750 / 6: 0350 60 k = 0.752) 4 K) i 1 1 J 1 J i J 11 j '1 O ...
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