MECHANICAL ENGINEERING DES.(LL)-W/CNCT
15th Edition
ISBN: 9781260531374
Author: BUDYNAS
Publisher: MCG
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Chapter 17, Problem 12P
To determine
The reason for centrifugal tension is negligible in metal belts.
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Find the power capacity and the cone angle of a cone clutch under uniform pressure having 220 mm major diameter, 180 mm minor diameter, length of contact of 120 mm, 880 rpm,and allowable pressure of 80 kPa.
Can you derive the equation of the length of the belt and the angle of wrap between belt and pulley both for open belt and crossed belt.
A multiple V-belt drive is required to transmit 4 kW. The smaller pulley of the system is150 mm diameter, rotates at 200 rev/min, and has an angle of lap angle of 135°. Thegrove angle is 40° and the coefficient of friction between the belt and the pulleys is 0·3.If the maximum tension in any one belt is limited to 800 N, calculate:(a) The number of belts required. (b) The minimum tension in any one belt. (c) The required pre-tensioning of the belt. The centre-to-centre distance between the pulleys is 2 m.(d) Determine to the nearest mm, the required size for the larger pulley.(e) Find the approximate length of the belt
Chapter 17 Solutions
MECHANICAL ENGINEERING DES.(LL)-W/CNCT
Ch. 17 - Example 17-2 resulted in selection of a 10-in-wide...Ch. 17 - A 6-in-widc polyamide F-l flat belt is used to...Ch. 17 - Prob. 3PCh. 17 - A flat-belt drive is to consist of two...Ch. 17 - In solving problems and examining examples, you...Ch. 17 - Return to Ex. 17-1 and complete the following. (a)...Ch. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Two shafts 20 ft apart, with axes in the same...
Ch. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - A designer has to select a metal-belt drive to...Ch. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Two B85 V belts are used in a drive composed of a...Ch. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - The geometric implications of a V-flat drive are...Ch. 17 - A 2-hp electric motor running at 1720 rev/min is...Ch. 17 - The standard roller-chain number indicates the...Ch. 17 - Prob. 24PCh. 17 - A double-strand no. 60 roller chain is used to...Ch. 17 - A four-strand no. 40 roller chain transmits power...Ch. 17 - Prob. 27PCh. 17 - Prob. 28PCh. 17 - Prob. 29PCh. 17 - Prob. 30PCh. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Prob. 33PCh. 17 - For Prob. 17-29 estimate the elongation of the...
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- Calculate the energy of the first 6 rotational levels for the rigid rotor and elastic motor model.arrow_forwardDerive the expression for the braking torquearrow_forwardThe belt tension in the tight and slack sections is 25 N and 15 N, respectively. The belt operates at a speed of 10 m/s. How much power is delivered by the transmission system?arrow_forward
- The tensions in the tight and slack side of a belt drive system are 1850 N and 525 respectively. If the belt speed is 8 m/s what power in kW will be transmitted with no slippagearrow_forwardDraw the pneumatic diagram only of the displacement/step diagram given in the attachment imagearrow_forwardIn a lamella clutch, the number of inner lamellae zi= 5 pieces, the number of outer lamellas zd=6 pieces. If the inner radius of the lamella is ri=70mm, the radius of the outer lamella is rd=120mm, the surface safety pressure of the lamella material is pem =0.8 MPa, the friction coefficient is u=0.1, what is the maximum power that the clutch can carry at n=120 rpm?arrow_forward
- Section angle of V-belt in belt drive φ=40˚,In order to make good contact and increase friction, thepulley groove angle should be_____. A.Slightly greater than 40˚ B.Slightly less than 40˚C.Equal to 40˚ .D.Equal to 90˚ (please explain it too)arrow_forwardFor a system mass spring define with your words but in detail, the following motion times, write the Edque characterizes each motion undamped free motion damped free motion forced motion Resonancearrow_forwardTwo pulleys, one 425mm diameter and the other 210mm diameter are one parallel shaft 2m apart and are connected by a crossed flat belt. Find the length of the belt required and the angle of conduct between the belt and each pulley. What power can be transmitted by the belt when the larger pulley rotates at 200 rev/min, if the maximum permissible tension in the belt is 1 kN, and the coefficient of friction between the belt and pulley is 0.3?arrow_forward
- Consider the velocity triangle illustrated for a particular rotor.arrow_forwardstatic of rigid bodiesarrow_forwardA single plate friction clutch with both sides of plate being effective is used to transmit power at an engine speed of 200rpm. It has outer and inner radii 10cm and 8cm respectively. Find maximum power transmitted and the corresponding axial thrust, if the maximum intensity of pressure is not to exceed 0.08N/mm2 . Assume coefficient of friction as 0.25.arrow_forward
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Power Transmission; Author: Terry Brown Mechanical Engineering;https://www.youtube.com/watch?v=YVm4LNVp1vA;License: Standard Youtube License