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[Pengfei Tan <question687386@xxxxxxxxxxxxxxxxxxxxx>]

Question #687386 on Yade changed:
https://answers.launchpad.net/yade/+question/687386

Pengfei Tan posted a new comment:
Thanks for your reply, Jérôme.

I saw that the MindlinPhys can consider the adhesive force from the Yade
manual (Here, the adhesive force means van Der Waals force).
"Law2_ScGeom_MindlinPhys_Mindlin" has the attribute "includeAdhesion"
which can include the adhesion force by using the DMT model. And,
"Ip2_FrictMat_FrictMat_MindlinPhys" has the attribute "gamma" to set the
surface energy parameter which is needed for evaluating the adhesion
force in the DMT model.

I also found the formulation which calculates the adhesion force in the "HertzMindlin.cpp" as follows:
Real Adhesion = 4.*Mathr::PI*R*gamma; // calculate adhesion force as predicted by DMT theory. 

I read Chiara Modenese's thesis "Numerical study of the mechanical
properties of lunar soil by the discrete element method". He used the
DMT model to calculate the van Der Waals force.

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