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 The information provided may be out of date.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.
Incident waves in Solid Mechanics
Posted 5 déc. 2014, 05:49 UTC−5 Structural Mechanics Version 4.4 0 Replies
Please login with a confirmed email address before reporting spam
I'm trying to implement purely incident elastic waves (p-waves or s-waves) in Solid Mechanics module, but I have trouble to defining a wave that is purely incident.
The boundary condition I'm trying to implement (in Frequency Domain) is:
u_x(x_left, omega) = 2*Ap*exp(i*kp*x_left) - ( 1/i*kp )* dx u_x(x_left, omega)
u_y(x_left, omega) = (- 1/i*ks)*dx u_y(x_left, omega)
where u_x(x_left, omega) and u_y(x_left, omega) is the displacement i x & y-direction on a boundary to the left, Ap is the amplitude, kp and ks are wavenumbers, x_left is the position of left boundary and
dx u_x(x_left, omega) and dx u_y(x_left, omega) are the partial derivatives of displacement components i x & y-direction at the left boundary, with respect to x.
This is a kind of mixed boundary condition and I wonder if there is any way to implement this boundary condition in Solid Mechanics module, or is there any other way to prescribe a purely incident elastic wave?
Kind regards,
Alexey
Hello Alexey Khlopotin
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.