Free And Forced Vibrations

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Chris Staines

Tecnologia Negócios

Free oscillators ,[object Object],[object Object],[object Object],[object Object]

Forced oscillators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Problems ,[object Object],[object Object],[object Object],[object Object]

Damping ,[object Object],[object Object],[object Object],[object Object]

Types of damping ,[object Object],[object Object],[object Object]

Q-factors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Examples ,[object Object],[object Object],[object Object],[object Object]

Unwanted resonance ,[object Object],[object Object],[object Object],[object Object],[object Object]

Model aircraft being tested for resonance in a wind tunnel

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Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. The term vibration is precisely used to describe mechanical oscillation. Familiar examples of oscillation include a swinging pendulum and alternating current. Oscillations occur not only in mechanical systems but also in dynamic systems in virtually every area of science: for example the beating of the human heart (for circulation), business cycles in economics, predator–prey population cycles in ecology, geothermal geysers in geology, vibration of strings in guitar and other string instruments, periodic firing of nerve cells in the brain, and the periodic swelling of Cepheid variable stars in astronomy. Contents

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