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Frequency Analysis of Simulation Data

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1
Fourier Analysis

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1.1
The Model

Consider a weak axis excited by a torque pulse train. The axis is modeled by three segments joined by two torsion springs. The following diagram is imported from the MathModelica Lite Graphic Editor where the model was defined. (See Section 15.8 in the Modelica Book).

Diagram: WeakAxis

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1.2
Simulation of WeakAxis

We simulate the model in 100 seconds ...

and plot the angular velocity of the rightmost axis-segment.