Given an initial disturbance, a mechanical dynamic system oscillates as it converts potential energy to kinetic energy and vice versa.
Unless an energy dissipation mechanism exists, the system given an initial disturbance will continue to oscillate at a rate defined by its mass and stiffness properties.
The presence of damping in this mechanical system removes energy from the system and the oscillations gradually die out.
Depending on the level of damping in the system, the decay rate will vary.
Please be mindful of aliasing effects that may be encountered.
Given that a radix-2 FFT is implemented here, the user can select specific spectral numbers of lines from the drop-down menu in the FFT Spectrum options. For this single-sided amplitude spectrum, the Time Series will contain twice as many samples as there are lines/bins in the spectrum.
The user can also manipulate the frequency span (Fmax) and subsequently the sampling rate of the time signal.
It is important to note that transient vibration is the only deterministic signal which exhibits non-discrete spectral behavior. Regardless of bin-centering, transient data will show broadband spectral activity.
In this simulator, the convention that down is positive is upheld.
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