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Hexagonal Crystal (Sapphire) Wafer Orientation
Posted 6 mars 2014, 05:59 UTC−5 MEMS & Nanotechnology, MEMS & Piezoelectric Devices, Materials, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.2 0 Replies
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I am working with the solid mechanics module and I don't seem to understand the way Comsol treats a material with hexagonal crystal structure.
I have a simple 3D rectangular solid structure that has been cut from a Sapphire Wafer. Therefore, I defined the anisotropic material properties according to published data of sapphire which is in principle a hexagonal system. One side is aligned to the (10-10) direction of Sapphire while the out of plane direction is the c-axis (0001). How does comsol transform the crystal structure of my material to its cubic coordinate system. I thought I can use eulerian rotation (Defininitions--> Rotated Systems) but I don't think that is right because I guess it refers to the cartesian system.
I would be very pleased if anyone is willing to help me out and knows how to align a structure to an hexagonal coordinate system.
Thanks in advance,
Patrick
Hello Patrick Mayrhofer
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