Non smooth DEM with Chrono for modelling cohesive granular materials

[DoubleJing Forever]

Hi all,

I plan to use the nonsmooth DEM (DEM-C) with the Chrono for modeling cohesive granular materials. Do you guys know if there is a contact model alllowing tensile contact forces (or cohesive contact forces) between particles? Also, it the force reachs the maximum contact tensile force, the cohesion linkage can be broken. Please help me if you have some idea.

Best regards,

Jingjing Meng 

[Dan Negrut]

Is there a reason why you want to use the non-smooth DEM?

 

For larger problems, other users have had good luck with this Chrono DEM implementation: https://github.com/projectchrono/DEM-Engine. It’s smooth contact though. It can specify a user-defined force that behaves as you describe. It’s fast, but requires NVIDIA GPUs.

 

Dan

---------------------------------------------

Bernard A. and Frances M. Weideman Professor

NVIDIA CUDA Fellow

Department of Mechanical Engineering

Department of Computer Science

University of Wisconsin - Madison

4150ME, 1513 University Avenue

Madison, WI 53706-1572

608 772 0914

http://sbel.wisc.edu/

http://projectchrono.org/

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[Ruochun Zhang]

Dan, I suppose Meng needs DEM-C for his research, maybe a comparison. I feel this can be done via base Chrono's callback functions, but I am not too familiar with it; hoping someone can help.

Thank you,

Ruochun