MECHANICAL ENGINEERING DES.(LL)-W/CNCT
15th Edition
ISBN: 9781260531374
Author: BUDYNAS
Publisher: MCG
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Chapter 16, Problem 9P
(a)
To determine
The dimension
(b)
To determine
The free body diagram of handle lever and both shoes.
(c)
To determine
Whether the direction of rotation of drum affect the braking torque.
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For the drum brake shown in the following figure, there is an inner rim diameter of 280 mm and dimension a = 90 mm. The shoes have a face width of 30 mm. The force exerted by the cylinder hydraulic is 1000 N and the average coefficient of friction is 0.3.
Determine:
a) The maximum pressure in each shoe;
b) The braking torque;
c) Reactions resulting from the pivot pin;
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.
A differential band brake is shown in the figure. The diameter of the drum is 800 mm. The coefficient of friction between the band and the drum is 0.3 and the angle of embrace is 240°. When a force of 777 N is applied at the free end of the lever, find:
a. The maximum force, in Newtons, in the band for the clockwise rotation of the drum
b. The minimum force, in Newtons, in the band for the clockwise rotation of the drum
c. The maximum force, in Newtons, in the band for the counter clockwise rotation of the drum
d. The minimum force, in Newtons, in the band for the counter clockwise rotation of the drum
e. The torque which can be applied by the brake, in N-m, for the clockwise rotation of the
drum.
Chapter 16 Solutions
MECHANICAL ENGINEERING DES.(LL)-W/CNCT
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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