C3 Problems caused by resonance and Removing resonance

Probems caused by resonance
1)Bridges - People travelling across the bridge provide a driving force. When driving frequency equals natural frequency, large oscillations will occur due to resonance.
-These can damage the bridge
-Parts of the aircraft may experience resonance which can damage those parts
Removing resonance

Damping can be used to remove effects of resonance
As the damping ratio increases,
-resonant frequency decreases
-the maximum amplitude decreases
-the peak becomes wider
-Plastic deformations can provide critical damping when used in building construction(ex: steel used for structural integrity can absorb vibration energy due to ductility)
resonance graph img:

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