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Admitance plot stops showing resonances when a bounday condition is set to Periodic or Low Reflection
Posted 28.07.2016, 18:04 GMT-4 MEMS & Nanotechnology, Acoustics & Vibrations, MEMS & Piezoelectric Devices, Studies & Solvers, Structural Mechanics Version 5.2 1 Reply
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Using V5.2 frequency domain analysis, I am having trouble with getting a valid admittance curve for a piezo device. As soon as I specify a Periodic or a Low-Reflection boundary condition, admittance curve becomes smooth showing no resonance behavior. This is despite the fact that Eigenfrequency study comes back with correct resonance frequencies. Has anyone else run into this problem? I would appreciate any pointers.
1 Reply Last Post 02.08.2016, 18:50 GMT-4
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Posted:
8 years ago
I was able to resolve the issue. In frequency domain analysis:
1- Floquet Periodicity type must be selected for solid mechanics Periodic Boundary Condition.
2- Perfectly Matched Layer (PML) must be used instead of Low-reflecting Boundary.
1- Floquet Periodicity type must be selected for solid mechanics Periodic Boundary Condition.
2- Perfectly Matched Layer (PML) must be used instead of Low-reflecting Boundary.