Calculation particle - wall contact

Submitted by teenut567 on Sat, 11/22/2014 - 18:51

Hi,
i have a question about the calculation of the contact force for particle-wall contact.
For example, if i use the Hertzian model, which radius will be inserted for the wall in the prefactor of the equation
sqrt(delta*(Ri*Rj/(Ri+Rj))*(...)?
Is the force calculated the same way, like for particle-particle-contact, at all?

JoshuaP | Mon, 11/24/2014 - 09:57

if you look for normal Hertz contacts they use the radius R of the sphere for sphere and half-space contact instead of the effective radius for sphere sphere contact which is calculated by Ri*Rj/(Ri+Rj).
I hope this helps you.

ckloss's picture

ckloss | Fri, 12/12/2014 - 13:08

Hi,

this is correct. r_particle is the radius used for particle-wall contact
Cheers
Christoph