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What is difference between resonance and resonant?
Answer: “resonance” is a noun and should not modify frequency. “Resonant” is an adjective, and is used properly in sentence B. “Resonant” and “resonance” are frequently confused, usually as in the example A above. Also, “resonate” is a verb; “resonator” is a noun (that which has a “resonance”).
Is resonance the same as natural frequency?
The natural frequency is the frequency at which a system would oscillate if there were no driving and no damping force. The phenomenon of driving a system with a frequency equal to its natural frequency is called resonance. A system being driven at its natural frequency is said to resonate.
What is aeroelastic resonance?
Resonance is when the periodic response of a system to a periodic force is much stronger than usual near one or more particular frequencies. Aeroelastic flutter is not specifically a resonance because the input is not a periodic force, rather the input is uniform relative velocity of air and some object.
How is aeroelastic flutter a type of resonance?
The bridge collapse is more accurately described as an unstable mode of the entire bridge system that was excited by a constant (not vibrating) energy input from the wind. “a result of aeroelastic flutter caused by a 42 mph (68 km/h) wind.
Is the force in a flutter always constant?
The energy (force) input of the wind is not constant in aeroelastic flutter. As the name “flutter” implies, the forcing function is periodic, which is why the oscillation happens. A constant energy (force) input can only cause a constant/static deformation. The energy (force) input of the wind is not constant in aeroelastic flutter.
Why does aeroelastic flutter have a periodic forcing function?
A constant energy (force) input can only cause a constant/static deformation. The energy (force) input of the wind is not constant in aeroelastic flutter. As the name “flutter” implies, the forcing function is periodic, which is why the oscillation happens.