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a dip in Frequency vs Displacement Graph.
Posted Jul 6, 2016, 8:57 a.m. EDT Version 5.0, Version 5.2a 1 Reply
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Hey! I am working on a resonator. My resonance frequency is 0.9821 MHz. Why this dip is occurring on resonance frequency?
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1 Reply Last Post Jul 6, 2016, 10:00 a.m. EDT
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Posted:
8 years ago
Hi,
The result is imaginary at resonance. You are plotting the real part, which becomes zero.
From the user guide:
---------------
Most results of a frequency domain analysis are complex. In results evaluation, the real value of any result quantity will be shown. Assuming that you want to display for example the displacement in the x-direction, u, you have following options:
- Plot u or real(u). This gives the displacement at zero phase angle.
- Plot imag(u). This gives the displacement at a phase angle of 90 degrees.
- Plot abs(u). This gives the amplitude of the displacement.
- Plot arg(u). This gives the phase angle of the displacement.
---------------
Regards,
Henrik
The result is imaginary at resonance. You are plotting the real part, which becomes zero.
From the user guide:
---------------
Most results of a frequency domain analysis are complex. In results evaluation, the real value of any result quantity will be shown. Assuming that you want to display for example the displacement in the x-direction, u, you have following options:
- Plot u or real(u). This gives the displacement at zero phase angle.
- Plot imag(u). This gives the displacement at a phase angle of 90 degrees.
- Plot abs(u). This gives the amplitude of the displacement.
- Plot arg(u). This gives the phase angle of the displacement.
---------------
Regards,
Henrik