sound waves production and propagation in liggghts

Submitted by maz on Wed, 12/29/2010 - 23:03

Hi !
Is this possible in liggghts to create the sound waves frequency and propagate it through granular media ?
Best
maz

ckloss's picture

ckloss | Thu, 12/30/2010 - 09:41

I have never done this. What you can is to induce waves by wiggling boundary atoms. I think this will need short time-steps and maybe some customized post-processing.

Christoph

marketos | Tue, 01/11/2011 - 13:07

Hi,
It is definitely possible to propagate a disturbance through a granular sample in LiGGGHTS and measure its velocity. But in order to replicate the exact observed behaviour in the laboratory (eg frequency dispersion) you will have to carefully think about the contact model, damping etc.
George