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
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 16, Problem 2P
For the brake in Prob. 16-1, consider the pin and actuator locations to be the same. However, instead of 120°, let the friction surface of the brake shoes be 90° and centrally located. Find the maximum pressure and the total braking torque.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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.
For the same question, the Impeller hub will be pressed onto the taper shaft with the Nut. How much FORCE should the nut create for this? Also, if the nut loosens and falls off, calculate whether the connection will be DISCONNECTED by itself. (Do not take the values from the previous question, use the values given in this question!) Engine power P=27 kW, RPM n=1684 rpm, Connection MEDIUM vibrating, Conical inclination angle α=1, Coefficient of Friction μ=0.3 , Average of the conical part diameter d=24 mm, connection width b=96 mm
The 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.
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
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- The force P applied to the brake handle enables the band brake to reduce the angular speed of a rotating drum. If the tensile strength of the band is 3800 lb, find the maximum safe value of P and the corresponding braking torque acting on the drum. Assume that the drum is rotating clockwise.arrow_forwardTwo pulleys, one 650 mm diameter and the other 400 mm diameter, on parallel shafts 1.5 m apart are connected by a flat belt. Find the length of the belt required and the angle of contact between the belt and each pulley. What power can be transmitted by the belt when the larger pulley rotates at 1200 rev/min, if the maximum permissible tension in the belt is 10 kN, and the coefficient of friction between the belt and pulley is 0.05? give proper explaination and dont give handwritten solution.arrow_forwardTwo pulleys, one 650 mm diameter and the other 400 mm diameter, on parallel shafts 1.5 m apart are connected by a flat belt. Find the length of the belt required and the angle of contact between the belt and each pulley. What power can be transmitted by the belt when the larger pulley rotates at 1200 rev/min, if the maximum permissible tension in the belt is 10 kN, and the coefficient of friction between the belt and pulley is 0.05? dont write handwritten solution.arrow_forward
- Determine the principal dimensions of a cone clutch faced with lather to transmit 40 kW at 800 r.p.m. from an electric motor to an air compressor. Sketch a sectional front view of the clutch and provide the main dimensions. Assume that the semi-angle of the cone is 10°, the coefficient of friction is 0.3, mean diameter of cone is (7-10)d, where d is the diameter of the shaft, allowable normal pressure for lather and cast iron is 0.1 to 0.2 N/mm, shear stress 100 N/mm², load factor is 2 and the mean diameter to face width ratio is 6.arrow_forwardA conical clutch has an included angle of 120°, a coefficient of friction of 0.4, and outer and inner diameters of 85mm and 18mm respectively. Using both the uniform wear theory and the uniform pressure theory, calculate the force required to press the two halves together if it is to transmit 300W at 750rev/min. The uniform wear theory and the uniform pressure theory deliver different values for torque in the same system. Which theory would be preferred in practice for use in calculations involving a friction clutch? Give reasons for your choice.arrow_forwardA ladder of length 2L and mass M is positioned on level ground leaning against a wall such that the angle between the ladder and the horizontal is @. The coefficient of static friction between the ladder and the wall and between the ladder and the ground is jistatic = 0.66. The centre of mass of the ladder is halfway along it. For the ladder to be in mechanical equilibrium: Consider torques about the centre of the ladder. In which direction (into or out of the page) does the torque due to each of the 5 forces force act?Write down an equation for the sum of the torques about the centre or mass of the ladder and then use your equation for the torques to derive an expression for tan o in terms of the magnitudes of the forces actingarrow_forward
- In Fig. 6-38 the maximum lining pressure for any point on the brake is to be limited to 100 psi; μ = 0.2. Find the torque capacity of the brake and the value of force P. Ans. T = 9,080 in-lb, P = 487 lbarrow_forwardThe block-type parking brake shown in the figure has a width of 49 mm and an average friction coefficient of 0.32. Calculate the maximum pressure and braking moment on the shoe to provide a thrust of 419 N in the anti-clockwise system?arrow_forward- 7 Maris A cycle tire a cartyre & a truck tire is revolving on the same road . Which one will experience more friction ? why ? explain the law for it -m - 2. Explain the type of friction in ice skating with a neat diagram . - 3. Explain redundant frame with equationarrow_forward
- A flywheel weights 592 kg with a diameter 1.4 m. The flywheel rotates at 979 revolution per minute (rpm). If a constant braking torque 522 N.m is applied to the shaft during the rotation, calculate the number of revolutions turned through before the flywheel is coming to a complete stop.arrow_forwardCalculate the braking moment of the measured brake, using first approachif you know that P0 [N]=50N, μ=0.4 and length of loaded spring – L1=190mm.arrow_forward;: . L The contact surfaces in a cone clutch have an ej'fective diameter of 7‘5 i semi-angle of the cone is 15°. The coefficient of friction is 0.3. Find the torque requiy, 5 e slipping of the clutch if an axial force applied is 180 N. This clutch is employed to connect an electric motor running um_'form!y at 1 000 Epm. with, el which is initially stationary. The flywheel has a mass of 13.5 kg and its radius of gyriy, is Calculate the time required for the flywheel to attain full speed and also the energy [y, in of the clutch.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE L
International Edition---engineering Mechanics: St...
Mechanical Engineering
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:CENGAGE L
Power Transmission; Author: Terry Brown Mechanical Engineering;https://www.youtube.com/watch?v=YVm4LNVp1vA;License: Standard Youtube License