Resonance Jessica Liroff Definition: Resonance means the - - PowerPoint PPT Presentation
Resonance Jessica Liroff Definition: Resonance means the - - PowerPoint PPT Presentation
Resonance Jessica Liroff Definition: Resonance means the comparatively large-amplitude vibration that results whenever the frequency of some driving force closely matches a natural oscillation frequency of the system QuickTime and a
- Definition: Resonance means
the comparatively large-amplitude vibration that results whenever the frequency of some driving force closely matches a natural
- scillation frequency of the system
- n which it acts.
- Resonance is like pushing
a child on a swing
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Energy Dissipation
- Friction: conversion to
heat energy
- Radiation: conversion to
sound energy
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Energy Dissipation
- Dissipation is important near
resonance because large amplitude motions provide more chances to change oscillated energy into other forms.
- strong dissipative forces prevent
large vibrations.
- Weak dissipative forces make large
vibration amplitudes.
Energy flow and resonance
Degrees of freedom
- Each natural mode has it’s
- wn resonant response,
peaked at it’s own frequency.
- The violin: has a peaky
nonuniform response to pure sine waves.
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