Effect of Lattice spacing (flexible fiber)

Submitted by SHUBHAM AGARWAL on Fri, 11/27/2020 - 00:35

Hello
I have a question regarding "Flexible fiber version'
I want to carry out an axial vibration test on a flexible fiber. Based on the chosen inter-particle distance (lattice spacing), we can discretize the fiber eithe closely packed or loosely packed. Please refer to the picture attached for quick reference.
Keeping one end fixed, if we axially pull the other end and release, vibrations are expected. My question is as follows:

In case of closely packed, do we expect errors due to inter-particle collision during compression? If yes, is there anything I can do to minimize those?
In general, will the lattice spacing affect the compressive behavior for bonded particles

Thanks

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Image icon packing.png15.56 KB

mschramm | Sun, 11/29/2020 - 20:38

Hello,
I do not suggest placing particles further away then the sum of their radii as contact errors will occur between fibers (not inter fiber calculations).

I have added an additional flag to the atom style call
atom_style hybrid granular bond/gran n_bondtypes 1 bonds_per_atom 8 disableNormalContact 1
disableNormalContact 1 -> disables the contact forces if the two atoms are bonded together.