Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
10th Edition
ISBN: 9780073398204
Author: Richard G Budynas, Keith J Nisbett
Publisher: McGraw-Hill Education
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Chapter 16, Problem 8P
To determine
The pivot distance
The comparison between the pivot distances
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The band of a brake has a contact angle of 18° deg. If the pulls on the bands are 275 kg and 100 kg, find the coefficient of friction.
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The width of the simple band brake shown in the figure is 30 mm. The coefficient of friction between the brake and the drum surface is 0.20. Determine the braking torque and thickness of the band if the tensile stress is not to exceed 65 N/mm2.
Chapter 16 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Ch. 16 - The figure shows an internal rim-type brake having...Ch. 16 - For the brake in Prob. 16-1, consider the pin and...Ch. 16 - In the Figure for Prob. 16-1, the inside rim...Ch. 16 - The figure shows a 400-mm-diameter brake drum with...Ch. 16 - The block-type hand brake shown in the figure has...Ch. 16 - Suppose the standard deviation of the coefficient...Ch. 16 - The brake shown in the figure has a coefficient of...Ch. 16 - Prob. 8PCh. 16 - Prob. 9PCh. 16 - Prob. 10P
Ch. 16 - The maximum band interface pressure on the brake...Ch. 16 - The drum for the band brake in Prob. 1611 is 12 in...Ch. 16 - The brake shown in the figure has a coefficient of...Ch. 16 - The figure depicts a band brake whose drum rotates...Ch. 16 - The figure shows a band brake designed to prevent...Ch. 16 - A plate clutch has a single pair of mating...Ch. 16 - A hydraulically operated multidisk plate clutch...Ch. 16 - Prob. 18PCh. 16 - A cone clutch has D = 12 in, d = 11 in, a cone...Ch. 16 - Prob. 20PCh. 16 - A two-jaw clutch has the dimensions shown in the...Ch. 16 - Prob. 22PCh. 16 - Prob. 23PCh. 16 - Prob. 24PCh. 16 - Using the data of Table 16-6, find the mean output...Ch. 16 - When a motor armature inertia, a pinion inertia,...Ch. 16 - For the conditions of Prob. 1627, make a plot of...Ch. 16 - Prob. 29PCh. 16 - Prob. 30PCh. 16 - Prob. 31P
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- Wear rate of a truck tyre under an average load of 53 tonnes was 0.6m per kilometre of travel when it was just rolling, however, it increased to 5um when it was slipping under a stopping brake on a downhill slope having the grade g = 17%. Calculate the tyre working life in terms of number of kilometres travelled for both (1) rolling and (il) slipping case, if the maximum tyre thread depth was 21 mm. Calculate the stopping brake distance for the case of (iii) rolling and (iv) slipping, when the truck started braking at the speed of 52km/hr.arrow_forwardIn the system shown in Fig. P-13-3.14, body A is dropping at 40 fps when a brake force P=80lb is applied. Determine the time for A to come to rest. Neglect the thickness of the brake blockarrow_forwardA band brake is to absorb 5 Hp at 200 rpm. The maximum pressure of the lining and the drum is 120 psi. The angle of wrap is 3.6 radians, the width of the band is 3 inches and f = 0.15. Find the forces at the tight side. The diameter of the drum is at 8 inches. The correct answer is 2880 lbs. I just need a complete solution. Thank you!arrow_forward
- A block brake with a torque of 250 N-m. Its drum rotates at 100 rpm. The length of the block (1) is twice its width (w). Assume, the coefficient of friction P is 0.35. Calculate: (1) the applied load (P) and the hinge-pin reaction (Rx ana Ry) for clockwise rotation of the drum; (2) the applied load and hinge-pin reaction for anticlockwise rotation of the drum; (3) the rate of heat generated during the braking action. (4) The dimensions of the block, if the intensity of pressure between the block and brake drum is 1 MPa. (5) Check whether the brake is self-locking.arrow_forwardA prony brake is to be built to measure the torque output of a 10-hp motor that operates at a speed of 1200 r/min. If the scale available has a maximum capacity of 7kg, what is the length of the shortest brake arm that could be used to measure any torque output of the motor up to 125 percent of its rated value?arrow_forwardThe figure shows an internal rim-type brake having an inside rim diameter of 11in and a dimension R of 3.5 in. The shoes have a face width of 1.25 in. Find the braking torque and the maximum pressure for each shoe if the actuating force is 205 Ibf, the drum rotation is counterclockwise, and f=0.32. The maximum pressure on the right-hand shoe parp is [ 16.99] @ psi. The maximum pressure on the left-hand shoe pa| H is [100.813 | @ psi. The torque on the right-hand shoe Tgis [ .056 | @ kipin. The torque on the left-hand shoe T is [ .332| @ kipin. Total braking torque Tiotal s [-3887] @ Kip-in.arrow_forward
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