Natural Frequency

The frequency of free vibration of a system. The frequency at which an undamped system with a single degree of freedom will oscillate upon momentary displacement from its rest position.

Resulting from only elastic and inertial forces of the system.

Also known as Normal Mode.

See also: Characteristic Equation, Damped Natural Frequency, Modal Analysis, Normal Mode of Vibration, Ringing.

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Subjects: Mechanical Engineering Noise & Vibration Physics