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Passive Vibration Isolation

Eugene I. Rivin
Eugene I. Rivin
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ASME Press
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This Chapter provides the basic information necessary for designing well functioning vibration isolation systems for various groups of objects. The textbook-like analysis of single-degree-of-freedom vibration isolation systems illustrates influence of damping on vibration isolation as well as importance of the damping mechanism involved in a particular application. Consideration of intentional or non-intentional nonlinearity of vibration isolators is shown to be important.

Vibration isolation systems for real-life objects are characterized by much more than one degree-of-freedom. This issue is considered in two aspects. On one hand, the basic model of a vibration isolation system, assuming a rigid object isolated by resilient...

1.0 General Comments
1.1 Inertia and Geometric Properties of Typical Machines and Other Mechanical Devices
1.2 Basic Characteristics of Elastic Mounts (Vibration Isolators)
1.3 Elastically Supported Solid Object Dynamic Coupling
1.4 Dynamics of Single-Degree-of-Freedom Vibration Isolation System
1.4.1 Vibration Isolator with Viscous Damper
1.4.2 Vibration Isolator with Internal (Hysteresis) Damping
1.4.3 “Relaxation” Isolation System with Viscous Damper
1.4.4 Single-Degree-of-Freedom System with Motion Transformation
1.5 Dynamics of Two-Degrees-of-Freedom Vibration Isolation System
1.5.1 Generic Two-Degrees-of-Freedom System with Damping
1.5.2 Vibration Isolator with Intermediate Mass (Two-Stage Isolator)
1.6 Three-Degrees-of-Freedom (Planar) Vibration Isolation System
1.6.1 Dynamics of Planar Isolation System
1.6.2 Natural Frequencies of Planar Vibration Isolation System
1.6.3 Planar Vibration Isolation System with Inclined Mounts
1.6.3A Focal Equi-Frequency System
1.7 Vibration Isolation System under Random Excitation
1.7.1 Definitions
1.7.2 Travel of Random Vibration Through Dynamic System
1.8 Vibration Isolation System under Pulse Excitation
1.9 Nonlinearity in Vibration Isolation Systems
1.10 Wave Effects in Vibration Isolators
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