Menu

Discussion Forum

New Discussion
Filtra

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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.

Band structure in Phononic Crystal

Posted 8 set 2014, 23:03 GMT-4 MEMS & Nanotechnology, MEMS & Piezoelectric Devices Version 4.3a 2 Replies

Ha Ha
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hello everyone,

Please help me how to sweep irreducible part of the first Brillouin zone in unit cell of phononic crystal to get the band gap.

Thanks in advance
2 Replies Last Post 25 gen 2016, 12:45 GMT-5
COMSOL Moderator

Hello Ha Ha

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.

Ukesh Koju
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 9 years ago 11 giu 2015, 15:13 GMT-4
I defined kx = 0,ky =0, in parameters; i n periodic periodic boundary condition for 2D sq Lt I chose floquet BC and used kx and ky for kf (for x and y box respectively), ; right click on study to add parametric sweep, where I chose kx = o to pi/a, (a = lattice constant). from the derived values(result>derived values>global evaluation); we can get kx vs eigen freq, but I got transverse mode only, z- mode missing (for solid solid 2d sq lattice).

BTW did you figure it out how to get a proper band structure for a 2D phononic crystal?

Thank you
I defined kx = 0,ky =0, in parameters; i n periodic periodic boundary condition for 2D sq Lt I chose floquet BC and used kx and ky for kf (for x and y box respectively), ; right click on study to add parametric sweep, where I chose kx = o to pi/a, (a = lattice constant). from the derived values(result>derived values>global evaluation); we can get kx vs eigen freq, but I got transverse mode only, z- mode missing (for solid solid 2d sq lattice). BTW did you figure it out how to get a proper band structure for a 2D phononic crystal? Thank you
Nagi Elabbasi Facebook Reality Labs
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 9 years ago 25 gen 2016, 12:45 GMT-5
I uploaded a COMSOL file to the Model Exchange that shows how to set up a phononic band gap eigenfrequency analysis. Here is the link: www.comsol.com/community/exchange/432/.
I uploaded a COMSOL file to the Model Exchange that shows how to set up a phononic band gap eigenfrequency analysis. Here is the link: http://www.comsol.com/community/exchange/432/.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content