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ST Cut Quartz in COMSOL

Posted 2 mar 2023, 19:27 GMT-5 Structural & Acoustics, MEMS & Piezoelectric Devices, Structural Mechanics 1 Reply

Sreejith Vattaparambil Sreedharan
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The below post is related to an archived discussion

[start here] How can I model ST Cut Quartz in COMSOL for simulating SAW sensor? How can I get the material properties?

1 Reply Last Post 3 mar 2023, 12:47 GMT-5
Dave Greve
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Posted: 2 years ago 3 mar 2023, 12:47 GMT-5
Updated: 2 years ago 3 mar 2023, 12:49 GMT-5

Unfortunately quartz is complicated. COMSOL contains 4 sets of material parameters for quartz, because there are two sets of standards (IRE 1949 and IEEE 1978) and two variants (left and right handed).

A further complication is that ST is a rotated cut, meaning that you need to rotate either the material coordinate system or the geometry.

See

https://www.comsol.com/blogs/piezoelectric-materials-applying-the-standards/

I'm glad I don't work with quartz.

Unfortunately quartz is complicated. COMSOL contains 4 sets of material parameters for quartz, because there are two sets of standards (IRE 1949 and IEEE 1978) and two variants (left and right handed). A further complication is that ST is a rotated cut, meaning that you need to rotate either the material coordinate system or the geometry. See https://www.comsol.com/blogs/piezoelectric-materials-applying-the-standards/ I'm glad I don't work with quartz.

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