yade-users team mailing list archive

Thread
Date

Re: [Question #703041]: How do I set the stiffness of FrictMat?

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Jan Stránský <question703041@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 06 Sep 2022 18:20:46 -0000
Reply-to: question703041@xxxxxxxxxxxxxxxxxxxxx
Sender: noreply@xxxxxxxxxxxxx

Question #703041 on Yade changed:
https://answers.launchpad.net/yade/+question/703041

Jan Stránský proposed the following answer:
> So as long as the Young's modulus is set, the stiffness is actually
set.

Yes and no.
So as long as the "young" parameter (not Young's modulus) is set, the stiffness is actually set.
"young" parameter is set always.

As mentioned in previous answers, "young" is a normal modulus, not
necessarily Young's modulus.

> So how to find the Young's modulus according to the required
stiffness, can I use the formula to calculate?

"calibration", "model fitting" and similar are your keywords.
"young" and "macroscopic stiffness" are linearly related, but the specific values is influenced by factors like actual packing, "poisson" parameter of FrictMat etc.

A good start is to run the simulation with a few different parameters
and investigate its influence.

Cheers
Jan

-- 
You received this question notification because your team yade-users is
an answer contact for Yade.