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 The information provided may be out of date.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.
Cricular cross section 2D modelling in cantilever carbon nanotube problem
Posted 4 apr 2011, 23:59 GMT-4 Version 4.0, Version 4.1 1 Reply
Please login with a confirmed email address before reporting spam
Hello,
I've been working with pull-in and pul-out voltages for a carbon nanotube NEM system.
Currently I'm using 2D modelling but I cannot get accurate results due to the thickness definition. I would like to know if there is some way I can model the circular coss section in 2D? I've read about using the 2D axysimmetric coordinate system but all my problem uses cartesian coordinates except for the tube shape so I do not think it's a good idea.
Thank you for your time
Best regards,
David Felipe Carvajal
Universidad de los Andes
Colombia
I've been working with pull-in and pul-out voltages for a carbon nanotube NEM system.
Currently I'm using 2D modelling but I cannot get accurate results due to the thickness definition. I would like to know if there is some way I can model the circular coss section in 2D? I've read about using the 2D axysimmetric coordinate system but all my problem uses cartesian coordinates except for the tube shape so I do not think it's a good idea.
Thank you for your time
Best regards,
David Felipe Carvajal
Universidad de los Andes
Colombia
1 Reply Last Post 5 apr 2011, 01:34 GMT-4
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Hi
Axisymmetry means that the axis is NOT moving radially, which is a specific symmetry condition that might not be what you want. The only other way I see is to set the thickness to something reasonable, but still, you will get "fringe" effects
So you might need to use 3D ...
--
Good luck
Ivar
Axisymmetry means that the axis is NOT moving radially, which is a specific symmetry condition that might not be what you want. The only other way I see is to set the thickness to something reasonable, but still, you will get "fringe" effects
So you might need to use 3D ...
--
Good luck
Ivar