Q7/ A differential band brake has a force of 220 N applied at the end of a lever as shown in Figure. The coefficient of friction between the band and the drum is 0.4. The angle of lap is 180°. Find (a) the maximum and minimum tension in the band, when a torque of 450 N-m is applied to the drum which rotate clockwise; and (b) the maximum torque that the brake may sustain for anticlockwise rotation of the drum. A° ni O mmm 50 150 100- B 200- 220 N C H

Q7/ A differential band brake has a force of 220 N applied at the end of a lever as shown in Figure. The coefficient of friction between the band and the drum is 0.4. The angle of lap is 180°. Find (a) the maximum and minimum tension in the band, when a torque of 450 N-m is applied to the drum which rotate clockwise; and (b) the maximum torque that the brake may sustain for anticlockwise rotation of the drum. A° ni O mmm 50 150 100- B 200- 220 N C H

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Problem-ddd: Consider FIG-ddd in the appendix. Note: The band brake is use... P = 100 N D H = 0.30 300 mm ¡30% 200 mm 100 mm 150 mm A FIGURE-ddd Problem-ddd: Consider FIG-ddd in the appendix. Note: The band brake is used to slow a rotating drum (spinning clockwise about O). a The braking process takes 5 seconds. a The static coefficient of friction between the belt and the drum is 0.50. Calculate: See Blackboard Your analysis is at 2 seconds into the 5 seconds braking process. Problem-ddd The magnitude of the x-component of the reaction force at 'A' is The magnitude of the y-component of the reaction force at 'B' is The magnitude of the "low tension" in the band brake is The magnitude of the angle of belt contact with the drum is N. N. N. radians.
The shaft is connected to a generator at A and the torque applied at each of the four gears is as follows: Tu = 40 N.m. T. = 25 N.m. T, 34.5 N.m. T, 23 Nm. The shaft is made of Aluminum 2014-T6 and H has a polar moment of inertia J= 2 *10 m. Find the angle of twist of gear E with respect to gear D knowing that the distance between the two gears is 840 mm. O0.0537 rad O0.0358 rad 10.0132 rad O 0.933 rad 40.0179 rad
The inverted T-beam supports the concentrated loads shown in Figure. Determine the following: What is the location of the neutral axis relative to the bottom of the beam? What is the moment of inertia of the beam section with respect to the NA? What is the maximum positive moment in the beam (in terms of P)? What is the maximum negative moment in the beam (in terms of P)? What is the maximum allowable value of P in order not to exceed a flexural stress of 4ksi in compression? What is the maximum allowable value of P in order not to exceed a flexural stress of 10ksi in tension? What is the maximum allowable value of P for this beam such that it will not fail by bending?
The wheel weighs 20 lb and rests on a surface for which μB = 0.2. A cord wrapped around it is attached to the top of the 30-lb homogeneous block. If the coefficient of static friction at D is μD = 0.3, determine the smallestvertical force that can be applied tangentially to the wheel which will cause motion to impend.
The device shown is a part of an automobile seat- back-release mechanism. The part is subjected to the 4-N force exerted at A and a 300-N•mm restor- ing moment exerted by a hidden torsional spring. Determine the y-intercept of the line of action of the single equivalent force. y F =4 N 10 mm 15° 40 mm 300 N-mm
A beam is subjected to a linearly distributed downward load and rests on two wide supports BC and DE, that exert uniformly distributed upward loads as shown. Determine the values of wec and WDE corresponding to equilibrium when WA = 750 N/m. 1200 N/m 20 C WBC ADA A 0.6 m- B' 0.8 m The value of WDE is The value of wBc is [ -3.1 ms -6 m- N/m. N/m. D (DE 1.0m E F
A drum with a 500-mm radius is attached to a disk with a radius of 250 mm. The disk and drum have a combined mass of 15 kg and a combined radius of gyration of 400 mm. A 12 kg block D is suspended by a wire that is warped around the drum. Another force P- 100 Nis applied to the wire that is warped around the disk. If the system is released from rest, neglecting the effect of axle friction determine: (a) the acceleration of the block. (b) the velocity of the block after 10 second. (c) the distance travelled by the block after 10 second. (d) the revolution by the drum just after 10 second. 500 mm P+ 250 mm
2. For the system shown below, compute the maximum torque it can accommodate if a is 2000mm and b is 150omm. Assume that the bronze segment, has a diameter of o.o75m, t < 60 MPa, and G = 35x10^3 MPa. On the other hand, assume the steel segment has a diameter of 0.05m, t < 80 MPa, and G = 83x10^3 MPa. b A
An 800 N-m couple is applied to the flywheel as shown. The coefficient of belt friction is 0.20. The minimum force P required to prevent rotation of the flywheel is applied. a.) Which Tension is larger, TA Oor TB? Explain b.) What is the angle of contact in radians? c.) What is the value of the ratio TA/TB? 800 N.m 60 60° A B
STRENGTH OF MATERIALS The compound shaft, consisting of a solid steel (diameter = 140 mm) segment and hollow aluminum ( outer diameter 120 mm, wall thickness = 10mm)) segment, carries the two torques shown. Determine the maximum permissible value of T subject to the following design conditions: τst ≤ 93 MPa, τAl ≤ 50 MPa, and θ ≤ 4o (angle of rotation of the free end). Use G = 83 GPa for steel and G = 28 GPa for aluminum. Include the FBD of each segment and show the internal torque. DISREGARD THE GIVEN DIAMETERS IN THE FIGURE.