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05-01ChapGere.0009

# 05-01ChapGere.0009 - A-PDF Split DEMO Purchase from...

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Solution 5.5-9 Beam in an oil-well pump SECTION 5.5 Normal Stresses in Beams 293 L 14 ft P 8.8 k b 8.0 in. h 20.0 in. t f 0.875 in. t w 0.625 in. h 1 h 2 t f 18.25 in. b 1 b t w 7.375 in. M max PL (8.8 k)(14 ft) 123,200 lb-ft 1,478,400 lb-in. 5,333.3 in. 4 3,735.7 in. 4 1,597.7 in. 4 9250 psi 9.25 ksi s max M max c I (1.4784 10 6 lb-in.)(10.0 in.) 1,597.7 in. 4 1 12 (8.0 in.)(20.0 in.) 3 1 12 (7.375 in.)(18.25 in.) 3 I bh 3 12 b 1 h 1 3 12 s max M max c I c h 2 10.0 in. b t f h 1 h 2 t w L P Problem 5.5-10 A railroad tie (or sleeper ) is subjected to two rail loads, each of magnitude P 175 kN, acting as shown in the figure. The reaction q of the ballast is assumed to be uniformly distributed over the length of the tie, which has cross-sectional dimensions b 300 mm and h 250 mm. Calculate the maximum bending stress max in the tie due to
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