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Modeling Piezoelectric Devices in 2D (Quartz)
Posted 29 août 2017, 11:33 UTC−4 2 Replies
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Hello all,
I'm trying to model a AT-cut quartz in 2D. I have no problem working in 3D (similar to the thickness shear oscillator example: www.comsol.com/model/thickness-shear-mode-quartz-oscillator-4707), but something about the choices of coordinate systems in 2D is throwing me off.
In 3D i use a Euler angle (ZXZ) of (0,-54.75,0)[deg] with the LH IEEE 1978 material properties and my simulations have the desired results. In this simulation my quartz is a cylinder with the thickness in the global Z-direction, just like the previously mentioned example.
In moving to a 2D simulation, I want to capture the shear deformation that is in the X direction on a cross section of the crystal. I'm strugging getting the material orientation correct without use of the 3D Euler angles. Any assistance would be greatly appreciated.
I'm trying to model a AT-cut quartz in 2D. I have no problem working in 3D (similar to the thickness shear oscillator example: www.comsol.com/model/thickness-shear-mode-quartz-oscillator-4707), but something about the choices of coordinate systems in 2D is throwing me off.
In 3D i use a Euler angle (ZXZ) of (0,-54.75,0)[deg] with the LH IEEE 1978 material properties and my simulations have the desired results. In this simulation my quartz is a cylinder with the thickness in the global Z-direction, just like the previously mentioned example.
In moving to a 2D simulation, I want to capture the shear deformation that is in the X direction on a cross section of the crystal. I'm strugging getting the material orientation correct without use of the 3D Euler angles. Any assistance would be greatly appreciated.
2 Replies Last Post 30 août 2017, 08:29 UTC−4
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Posted:
7 years ago
Hi there,
to my knowledge it is not possible orient the materials in 2D simulations.
Anyway, you could calculate the rotate tensors and create a new material.
to my knowledge it is not possible orient the materials in 2D simulations.
Anyway, you could calculate the rotate tensors and create a new material.
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Posted:
7 years ago
I had thought that might be the only way to go about this. Thank you for your response
-Brandon
-Brandon