Inertia in lammps granular package

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1

Hi, All,

Is there any approach for running granular simulations in lammps (with pair_style gran/hertz/history, for example) without inclusion of inertia? I suppose we can apply a high enough viscous damping coefficient and make the system over-damped, but I am curious if there is any other direct way (if it makes any sense) to turn off inertia totally in simulations?

Many thanks for any response in advance.
Best wishes,
BF

2

What do you mean by inertia? Do you mean
no rotational motion, torques? If so, then does setting
the tangential friction term to zero do what you want?

Steve

3

Another interpretation could be that he means something different - more similar to as is done in lubricateU. Viscous damping and elastic forces are being in equilibrium. Might be trying to simulate a foam I suppose.

Up to BF to clarify.