SHIGLEY'S MECH.ENGR...(LL)-PKG.>CUSTOM<
10th Edition
ISBN: 9781260028379
Author: BUDYNAS
Publisher: MCG/CREATE
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 16, Problem 3P
In the Figure for Prob. 16-1, the inside rim diameter is 11 in and the dimension R is 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 22S lbf, the drum rotation is counterclockwise, and f = 0.30.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A wagon weighing 5100 Kg moving at a speed of 8 km/h has to be brought to rest. Springs made of wire diameter 25mm with a Dm of 250mm and with 24 turns are available. Find the number of springs required in buffer to stop the wagon at a compression of 180mm.
b)A close coiled helical spring is made of diameter wire 25mm. The spring index is 8. Findthe number of turns required and maximum allowable load if the allowable shear stress is100 MPa and elongation is limited to 40mm. [G=80 GPa
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
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;
Chapter 16 Solutions
SHIGLEY'S MECH.ENGR...(LL)-PKG.>CUSTOM<
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
- 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 flywheel of mass 120 kg and radius of gyration 450 mm is rotating at 760 r.p.m. It is brought to rest by means of block brake system as shown in the figure. The mass of the brake drum assembly is 5 kg. The brake drum is made of cast iron having specific heat 470 J / kg°C. and the brake system provides a braking torque of 380 N-m. If the diameter of brake drum is 300 mm, the coefficient of friction is 0.35. find 1. The force (P) to be applied at the end of the lever for the clockwise rotation of drum. 2. Assuming that the total heat generated is absorbed by the brake drum only, calculate the temperature risearrow_forwardThe two square-jaw grips have the dimensions shown in the figure and are made of mild steel. The clutch is designed to transmit a power of 1.8 kW at 600 rpm. Calculate the surface pressure and shear stresses on the wedges and jaws. they all in mmarrow_forward
- The corediameter of the double start square threaded screw having a pitch of 12mm is 50 mm. A load of 18kN is lifted through a distance of 180mm. Find the work done(in Joule)in lifting the loadand the efficiency of the screw, when 1. The load rotates with the screw, and 2. The load rests on the loose head which does not rotate with the screw. The external and internal diameter of the bearing surface of the loose head are 60 mm and 10 mmrespectively. The coefficient of friction for the screw is 0.11,whilefor the bearing surface is 0.13.arrow_forwardConsider the system of two blocks shown in (Figure 1). There is no friction between block A and the tabletop. The mass of block B is 4.80 kg. The pulley rotates about a frictionless axle, and the light rope doesn't slip on the pulley surface. The pulley has radius 0.200 m and moment of inertia 1.30 kg⋅m2. If the pulley is rotating with an angular speed of 8.00 rad/s after the block has descended 1.20 m, what is the mass of block A?arrow_forwardMachine Dynamics: In the mechanism in the figure; The 2nd limb in the horizontal position rotates with a constant angular velocity of 100 rad/s under the effect of external torque T12.Obtain the equations of change of axial internal force, shear force and bending moment in limb 3 due to inertia and bond forces at the specified position, ignoring frictions.(O2 joint point is the center of gravity of limb 2) "Detailed Solution Please"arrow_forward
- A 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_forwardThe roughly position of the automobile jack shown in the figure is a square screw with a single blade at both ends. ABC is controlled by a bolt (right-hand threaded in A, left-handed in C). square of the bolt screw has a pitch of 2.5 mm and an average diameter of 9 mm. between the bolt and the jack limbs The coefficient of static friction is 0.15, taking into account the position and load shown, you can use the jack Find the magnitude of the torque that must be applied to raise it.arrow_forward8. Design a clamp coupling for transmitting 25 kW at 300 rpm. Allowable shear stresses in shaft and key are 50 MPa and 45 MPa, respectively. The number of bolts joining the two halves of muff is 4. The permissible tensile stress in the bolt is 70 MPa and the permissible crushing stress in the key is 90 MPa. The coeffi cient of friction between the muff of the CI and the shaft of steel is 0.20.arrow_forward
- PROBLEM The diameter of two pulleys are (0.3m)and (0.2m), center distance (1m).if we use open belt drive. Determine: 1- the length of V-belt (2ß = 60°). 2- the contact angle between belt and smaller pulley. 3- the horse power, if the smaller pulley turn with speed (400r.p.m) and the tension force in tight side (T1=900N), coefficient of friction ų=0.3 4- the speed of large pulley.arrow_forwardTwo parts of a machine, both made from steel, are held together by 7 equally-spaced M6 x 1.0 grade 8.8 bolts that are uniformly tightened to provide a total initial clamping force of 60 kN. What wrench torque is required to set the preload on these bolts? Assume a torque factor of 0.18 in your calculations. Express your answer in units of newton meters to a resolution of 0.1 N-m.arrow_forwardPlease draw the figure. Thank you so much.An engine flywheel and a clutch plate are both connected to a transmission shaft. Let the moment of inertia of the flywheel be I1 and its angular velocity ω1, and let the moment of inertia of the clutch plate be I2 and its angular velocity is ω2. The two discs have then been combined by forces which are applied at their axes of rotation so as not to cause any torque. The discs then reached a common final angular velocity after rotational collision. Find the expression for the final angular velocity.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Mechanical Design (Machine Design) Clutches, Brakes and Flywheels Intro (S20 ME470 Class 15); Author: Professor Ted Diehl;https://www.youtube.com/watch?v=eMvbePrsT34;License: Standard Youtube License