Hi,
I am looking for advice on how to implement deformable particle behavior in LIGGGHTS.
I have already read the forum posts here:
https://www.cfdem.com/forums/using-separate-contact-behavior-unloading-v...
https://www.cfdem.com/forums/which-atomstyle-choose
Both seem to indicate that plastic particle simulation is not possible with LIGGGHTS R-public, but the posts are over 2 years old. Is anyone currently working on this? One of the posts mentions a code snippet which implements the Walton Braun model but I didn't see any followup on this.
Thanks,
Doug
richti83 | Tue, 04/17/2018 - 08:22
linear and non linear hysteretic contact models
Fortunately in the last release (3.8.0) two new hysteresis models has been released:
(**) Rahul Mohanty (P&G and University of Edinburgh) and Tomaz Zorec (University of Ljubljana) added an implementation of the Edinburgh contact model - currently there is no doc yet, this will hopefully be in the next release.
(**) Rahul Mohanty (P&G and University of Edinburgh) also added an implementation of the Luding contact model - currently there is no doc yet, this will hopefully be in the next release.
I suggest to have a look in [1] about the mechanism behind EEPA (Edinburgh Elasto-Plastic Adhesion) and linear luding model.
Best,
Christian.
[1] Morrissey, J.: Discrete Element Modelling of Iron Ore Pellets to Include the Effects of Moisture and Fines. Edinburgh, University of Edinburgh. 2013. URL: link
dwhite | Wed, 04/18/2018 - 00:17
Hi Christian,
Hi Christian,
Thanks for the quick response! After looking at the reference you sent, I think these will work for my application. I will post back in this thread if I have additional questions.
Cheers,
Doug