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05-06ChapGere.0009 - A-PDF Split DEMO Purchase from...

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Stress Concentrations The problems for Section 5.13 are to be solved considering the stress-concentration factors. Problem 5.13-1 The beams shown in the figure are subjected to bending moments M 2100 lb-in. Each beam has a rectangular cross section with height h 1.5 in. and width b 0.375 in. (perpendicular to the plane of the figure). (a) For the beam with a hole at midheight, determine the maximum stresses for hole diameters d 0.25, 0.50, 0.75, and 1.00 in. (b) For the beam with two identical notches (inside height h 1 1.25 in.), determine the maximum stresses for notch radii R 0.05, 0.10, 0.15, and 0.20 in. Solution 5.13-1 SECTION 5.13 Stress Concentrations 371 (b) (a) M M M M d h h h 1 2 R M 2100 lb-in. h 1.5 in. b 0.375 in. (a) B EAM WITH A HOLE Eq. (5-57): (1) Eq. (5-56): (2)
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