Repeat Prob. 3€“126 with a bend radius of ¼ in.
Repeat Prob. 3€“126, Shown in the figure is a 12-gauge (0.1094-in) by ¾ -in latching spring that supports a load of F = 3 lbf. The inside radius of the bend is 1/8 in.
(a) Using straight-beam theory, determine the stresses at the top and bottom surfaces immediately to the right of the bend.
(b) Using curved-beam theory, determine the stresses at the inner and outer surfaces at the bend.

(c) By comparing the stresses at the bend with the nominal stresses before the bend, estimate effective stress concentration factors for the inner and outersurfaces.

Transcribed Image Text:

in R. No. 12 gauge (0.1094 in) _ Section A-A