Electromechanical Dynamics (Part 1).0062

Electromechanical Dynamics (Part 1).0062 - friction is...

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Mechanics and for the rotary-motion damper it is analogous (Fig. 2.2.7): d T = B - (02 - 00). (2.2.6) dt Note that the damping constant B has different dimensions for the two systems. In each case both displacements are measured with respect to references that are fixed. Mechanical friction occurs in a variety of situations under many different physical conditions. Sometimes friction is unwanted but must be tolerated and accounted for analytically, as, for example, in bearings, sliding electrical contacts, and the aerodynamic drag on a moving body. In other cases
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Unformatted text preview: friction is desired and is designed into equipment. Examples are vibration dampers and shock absorbers. Although in some cases a linear model is a useful approximation, in many others it is inadequate. The subject of friction VIscous-2-") Equivalent circuit (a) Fig. 2.2.7 Mechanical dampers: (a) translational system; (b) rotational system. A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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This note was uploaded on 02/10/2012 for the course MECE 4371 taught by Professor Liu during the Fall '11 term at University of Houston.

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