Machine design slide 19

Machine design slide 19 - ENGR 3220 Machine Design ENGR...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ENGR 3220 Machine Design ENGR 3220 Machine Design March 30 March 30 th th , 2011 , 2011 Band Band Brakes, Flywheels and Belts Brakes, Flywheels and Belts Band-Type Clutches and Brakes f e P P = 2 1 Force balance: Maximum Pressure bD P p a 1 2 = Example 1 The brake shown in the figure has a coefficient of friction of 0.30 and is to operate using a maximum force F of 400 N. If the band width is 50 mm, find the braking torque. Energy Considerations ) ( 2 ) ( 2 1 2 2 1 2 1 I I I I E +- = When the rotating members of a machine are caused to stop by means of a brake, the kinetic energy of rotation must be absorbed by the brake. This energy appears in the brake in the form of heat. In the mechanical system in Figure (a), if inertias I 1 and I 2 have initial angular velocity 1 and 2 , during the clutch operation both angular velocity change and eventually becomes equal, the total energy dissipated will be: Temperature Rise - =-- = t WC A h T T T T m C E T p CR p exp 1 Flywheel...
View Full Document

This note was uploaded on 04/16/2011 for the course ENGR 3220 taught by Professor Turro during the Spring '11 term at UOIT.

Page1 / 18

Machine design slide 19 - ENGR 3220 Machine Design ENGR...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online