Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Complex Band Diagram for a Phononic Crystal
Posted 31 mar 2021, 06:01 GMT-4 Acoustics & Vibrations, Structural Mechanics, Equation-Based Modeling Version 5.5 0 Replies
Please login with a confirmed email address before reporting spam
Hi all,
After some research I found out that I need to use the PDE Module in order to obtain the imaginary part of the complex band diagram of a 2D phononic crystal. I selected the Coefficient Form as the physics and the Eigenvalue as the study. My questions are: 1) Some coefficient matrices depend on the wavenumber. In this case, do I just type "lambda" in these matrices? 2) I noticed that there is no Floquet's periodic condition in this module. How can I set it up in the PDE Module? 3) What is the best Eigenvalue search method for such analysis?
Any suggestion is really welcome. Or, with you have any guide for this topic I'll also be really thankful.
Hello Ana Vasconcelos
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.