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Boundary Condition Assignment For Periodic Structure In COMSOL
Posted Feb 25, 2020, 1:32 a.m. EST Piezoelectric Devices, MEMS & Piezoelectric Devices Version 5.4 2 Replies
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Hi, all.
I face a problem in COMSOL: boundary condition assignment for a periodic structure.
In the attached image, a surface acosutic wave (SAW) sensor is shown, wherein four pressure forces (N/m) are applied on the lateral sides of the substrate. Due to the size of the full model, a unit cell model is adopted instead, which is a periodic struture including two IDT electrodes. In the simulation, I know that two Periodic boundary conditions should be assigned to the front/back, and left/right sides, respectively. My question is: can I add the Pressure on the lateral sides as shown in the full model? If can't, is there any solution?
Thank you very much!
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Look into doing an Eigenfrequency, Prestressed Analysis.
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Look into doing an Eigenfrequency, Prestressed Analysis.
Hi, Dave. Yes, you are right. But I am not sure this is correct or not. On the lateral surfaces, not only the Periodic Condition will be given but also the Boundary Load.