SHIGLEY'S MECHANICAL ENG.DESIGN W/CODE
10th Edition
ISBN: 9781260243314
Author: BUDYNAS
Publisher: MCG CUSTOM
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Chapter 14, Problem 6P
A 20° full-depth steel spur pinion has 20 teeth and a module of 2 mm and is to transmit 0.5 kW at a speed of 200 rev/min. Find an appropriate face width if the bending stress is not to exceed 75 MPa.
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campute the bending stress number for the goer pair described by the given data
beLow.
KS= 1, Km= 1,21,
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The matarial used for pinion a gear is cast iron
Q.2 A hollow simple supported shaft 3m made of steel with di/do of 0.6. The shaft is subjected to a bending force of 4 KN and transmits 52 KW with 150 rpm. Find the outer and inner diameter of the shaft, if the ultimate shear stress of 600 MPa and allowable compression stress of 100 MPa, tack safety factor 7.
A 2 in diameter shaft uses a straight spline with seven splines and contact length of 1.5 in. Assuming it is designed to slide while under load, compute it torques transmission capacity at 100 rpm if h is 8% of that shaft diameter. Note S = 1200 psi.
Chapter 14 Solutions
SHIGLEY'S MECHANICAL ENG.DESIGN W/CODE
Ch. 14 - A steel spur pinion has a pitch of 6 teeth/in, 22...Ch. 14 - A steel spur pinion has a diametral pitch of 10...Ch. 14 - Prob. 3PCh. 14 - A steel spur pinion has 16 teeth cut on the 20...Ch. 14 - Prob. 5PCh. 14 - A 20 full-depth steel spur pinion has 20 teeth and...Ch. 14 - A 20 full-depth steel spur pinion has a diametral...Ch. 14 - A steel spur pinion is to transmit 20 hp at a...Ch. 14 - A 20 full-depth steel spur pinion with 18 teeth is...Ch. 14 - Prob. 10P
Ch. 14 - A speed reducer has 20 full-depth teeth and...Ch. 14 - Prob. 12PCh. 14 - Prob. 13PCh. 14 - A 20 20-tooth cast-iron spur pinion having a...Ch. 14 - A steel spur pinion and gear have a diametral...Ch. 14 - A milled-teeth steel pinion and gear pair have Sut...Ch. 14 - A 20 full-depth steel spur pinion rotates at 1145...Ch. 14 - A steel spur pinion has a pitch of 6 teeth/in, 17...Ch. 14 - A commercial enclosed gear drive consists of a 20...Ch. 14 - A 20 spur pinion with 20 teeth and a module of 2.5...Ch. 14 - Repeat Prob. 14-19 using helical gears each with a...Ch. 14 - A spur gearset has 17 teeth on the pinion and 51...Ch. 14 - Prob. 23PCh. 14 - Prob. 24PCh. 14 - The speed reducer of Prob. 14-24 is to be used for...Ch. 14 - Prob. 26PCh. 14 - Prob. 27PCh. 14 - The gearset of Prob. 14-27 is going to be upgraded...Ch. 14 - Prob. 29PCh. 14 - AGMA procedures with cast-iron gear pairs differ...Ch. 14 - Spur-gear teeth have rolling and slipping contact...Ch. 14 - In Ex. 14-5 use nitrided grade 1 steel (4140)...Ch. 14 - In Ex. 14-5 use carburized and case-hardened gears...Ch. 14 - Prob. 35PCh. 14 - Prob. 36PCh. 14 - The countershaft in Prob. 373, p. 152, is part of...Ch. 14 - Build on the results of Prob. 1340, p. 720, to...Ch. 14 - Build on the results of Prob. 1341, p. 721, to...
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- 1.1. State three underlying assumptions in the formulation of the torsion formula, .TGJrl (3) 1.2 A hollow shaft has to be designed for a marine engine delivering 1200 kW when running at 120 r/min. The maximum allowable shear stress is 50 MPa and the maximum torque to be transmitted by the shaft is 30 % greater than the mean torque. The internal diameter of the shaft is 50 % that of the external diameter. Calculate: 1.2.1 The dimensions of the shaft and the angle of twist of the shaft over 3 m when transmitting the above torque (G = 80 GPa). (14) 1.3 Determine the torsional rigidity of a 300 mm long steel shaft with a diameter of 50 mm. (G = 80 GPaarrow_forwardA straight gear with module m = 5 mm and face width bw = 40 mm has center distance cd = 0.1875m. The pinion has 25 teeth, the speed is 1000 rpm, and pressure angle ᶲ = 200. Find the Hertzian contact stress at the pitch point when the gear transmits 10 kW. Neglect friction forces. The gear steel has modulus of elasticity E = 207 GPa and a Poisson’s ratio of 0.30.arrow_forwardA shaft has an external diameter (ED) of 350 mm and an internal diameter of 150 mm. i. Calculate the maximum shear stress in the shaft when it is transmitting 3700 kW at 100 rpm. ii. Find the angle of twist in a length of 20 x ED. (Assume G=75GN/m2). iii. If the hollow shaft is replaced by a solid shaft of the same weight and length, what power can it transmit for the same maximum shear stress?arrow_forward
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