--What is Structural
Dynamics?--
 
  The Concept of Structural Dynamics (continued)

Generally, vibration, another term for structural dynamics, is the oscillation of a mechanical system due to time-varying forces acting on it. The system or structure has its largest oscillation at a natural frequency, or resonance.
For a simple one-dimensional system:


f is the natural frequency in cycles/second
m is the mass
k is the stiffness
c is the damping and has no effect on the natural frequency
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Equation

Sine wave

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the effect of amplitude.

Sine Wave Frequency

Click to see video showing
the effect of frequency.


The motion of a simple vibrating object or system is described in terms of its amplitude (how large the oscillations is) and the frequency (how fast it oscillates).

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