SHIGLEY'S MECH.ENGINEERING DESIGN-EBK>I
10th Edition
ISBN: 9781259489563
Author: BUDYNAS
Publisher: INTER MCG
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Chapter 17, Problem 9P
To determine
The maximum allowable force.
The maximum safe bending force.
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The figure 1 shows a pulley assembly that consists of a shaft supported by two bearings and driven by a motor on the righthand side (not shown in the figure). The shaft diameter is 100mm. The pulley consists of two disks, each disk is 15 mm thick and has an outer diameter of 620mm, that are connected by means of a cylindrical shell. The length of the shell is 500mm, the outer diameter of the shell is 600mm, and the thickness of the shell is 15mm. The pulley drives a belt that places a uniformly distributed load on the shell (of 100000N) as shown in the diagram. The belt lifts a load that applies a torque of 6000Nm to the pulley. The shell and the plates are connected. A 6mm fillet should be applied to all the 90 degree corners between the shaft and the plates and between the shell and the plates.
The highest stress in the system
The figure 1 shows a pulley assembly that consists of a shaft supported by two bearings and driven by a motor on the righthand side (not shown in the figure). The shaft diameter is 100mm. The pulley consists of two disks, each disk is 15 mm thick and has an outer diameter of 620mm, that are connected by means of a cylindrical shell. The length of the shell is 500mm, the outer diameter of the shell is 600mm, and the thickness of the shell is 15mm. The pulley drives a belt that places a uniformly distributed load on the shell (of 100000N) as shown in the diagram. The belt lifts a load that applies a torque of 6000Nm to the pulley. The shell and the plates are connected. A 6mm fillet should be applied to all the 90 degree corners between the shaft and the plates and between the shell and the plates.
Apply the boundary conditions and the forces and torques to the system and determine the following:
Calculate the highest Principal stresses in the system ?
A horizontal belt conveyor arranged as shown in the figure P1 below operates at a speed of 270fpm and requires 25 Hp at the 40-inch-diameter driving drum. The drum receives power from a countershaftthrough a pair of spur gears. A motor operating at 860 rpm delivers power to the countershaft through aroller chain. The mechanical efficiency of the chain drive is 94 % and of the gears is 96 %. a) Determine theHp of the motor you would recommend. b) Determine the rpm of the driving drum and the countershaft. c)Calculate the number of teeth on the large sprocket required running the conveyor belt at the speedspecified. d) Determine the transmitted torque on the countershaft, in in-lb.
Chapter 17 Solutions
SHIGLEY'S MECH.ENGINEERING DESIGN-EBK>I
Ch. 17 - Example 17-2 resulted in selection of a 10-in-wide...Ch. 17 - A 6-in-widc polyamide F-l flat belt is used to...Ch. 17 - Prob. 3PCh. 17 - A flat-belt drive is to consist of two...Ch. 17 - In solving problems and examining examples, you...Ch. 17 - Return to Ex. 17-1 and complete the following. (a)...Ch. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Two shafts 20 ft apart, with axes in the same...
Ch. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - A designer has to select a metal-belt drive to...Ch. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Two B85 V belts are used in a drive composed of a...Ch. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - The geometric implications of a V-flat drive are...Ch. 17 - A 2-hp electric motor running at 1720 rev/min is...Ch. 17 - The standard roller-chain number indicates the...Ch. 17 - Prob. 24PCh. 17 - A double-strand no. 60 roller chain is used to...Ch. 17 - A four-strand no. 40 roller chain transmits power...Ch. 17 - Prob. 27PCh. 17 - Prob. 28PCh. 17 - Prob. 29PCh. 17 - Prob. 30PCh. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Prob. 33PCh. 17 - For Prob. 17-29 estimate the elongation of the...
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