263_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

# 263_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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SECTION 3.3 Circular Bars and Tubes 257 Solution 3.3-7 N UMERICAL DATA L ± 24 in. r 2 ± r 1 ± radians T ± 6200 lb-in. M AX . SHEAR STRESS I p ± 0.681 in. 4 ² max ± 7965 psi ; t max ± Tr 2 I p I p ± p 2 1 r 2 4 ³ r 1 4 2 t max ± T r 2 I p f ± 4 a p 180 b 1.25 2 in. 1.75 2 in. M AX . SHEAR STRAIN ´ max ± 0.00255 radians SHEAR MODULUS OF ELASTICITY G G ± 3.129 µ 10 6 psi or G ± 3.13 µ 10 6 psi ; G ± T L f I p G ± t max g max ; g max ± r 2 L f Problem 3.3-8 A propeller shaft for a small yacht is made of a solid steel bar 104 mm in diameter. The allowable stress in shear is 48 MPa, and the allowable rate of twist is 2.0° in 3.5 meters. Assuming that the shear modulus of elasticity is G ± 80 GPa, determine the maximum torque
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## This note was uploaded on 12/22/2011 for the course MEEG 310 taught by Professor Staff during the Fall '11 term at University of Delaware.

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