damping ratio


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damping ratio

[′dam·piŋ ‚rā·shō]
(physics)
The ratio of the actual resistance in damped harmonic motion to that necessary to produce critical damping. Also known as relative damping ratio.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Using such graphs, it is possible to check the best optimization stages for each damping ratio considered, and to show the best optimization points throughout the process.
The objective of modeling the damping controller is to enhance the damping ratio of the poorly-damped or unstable electromechanical modes of oscillation, which can be achieved through designing of a damping controller that provides a pure damping torque.
The Model 7264H 1,000g piezoresistive accelerometer with a natural frequency [greater than or equal to]19 kHz uses gas damping with a damping ratio between 0.4 and 0.85 to minimize ringing in shock applications.
Two of the necessary parameters for the study of dynamic behavior of an object are the modulus of elasticity and the damping ratio; and the results of this study will aid in the development of harvesters using mechanical vibration.
This study presents predictive models for estimating normalized shear modulus and damping ratio of three compacted remodeled rockfill materials using modified hyperbolic and nonlinear multiple regression methods.
The generalized inverse system parameters ([a.sub.10], [a.sub.11], [a.sub.20], [a.sub.21]) are set to make the damping ratio ([xi]) of this composite subsystem close to 0.7.
However, the relative variation in each mode damping ratio is larger than that for frequencies.
The variation curve of transmissibility coefficient T with the frequency ratio [beta] for discrete values of the damping ratio [xi] is shown in Figure 2.
The weakly damped electromechanical mode will have minimum value of damping ratio [Min([xi]i)] among all the damping ratios of the system.