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Position of a point in an eigenfrency study
Posted Feb 15, 2023, 4:05 p.m. EST 2 Replies
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Hi everyone,
I try to follow the position of a point for each frequency of an eigenfrequency analysis. Is there a way to extract the (X, Y, Z) position or the displacement field for a point on my structure.
I was able to obtain the maximum Displacement of that point, but I am not able to extract what is happening between the max and the min.
Thank you all, Etienne
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Hello Etienne,
In an eigenfrequency analysis, the magnitude of the eigenmodes is meaningless. Oscillation of the eigenmodes is, of course, sinusoidal.
Best regards,
Jeff
-------------------Jeff Hiller
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Viesing the magniduet of the displacement is not very helpful because one cannot distinguish between positive and negative values.
The most useful plot is a distorted shape plot, which provides a snapshot of the displacements at one time. A animation using dynamic data extension can also be useful for visualization.
Since the displacements are phasors, the displacement as a function of time is real(phasor*e^jwt).