Question about wear model in LIGGGHTS

Submitted by hcsgxl on Wed, 10/21/2015 - 03:14

In fix_mesh_surface_stress.cpp line 295 of LIGGGHTS 3.0.0, it writes:
E *= 2.*k_finnie_[atomTypeWall()-1][atom->type[ip]-1] * v_rel_mag * vectorMag3D(frc);
As defined in finnie wear document, E is a time derivative of the dimensionless mass. E should be accumulate with time.
However, I can't find any usage of timestep in fix_mesh_surface_stress.cpp.
So should I multiple the output data of "wear" in dump file by timestep to get the erosion depth?

Forums:

aaigner's picture

aaigner | Fri, 10/23/2015 - 10:26

Hi,

I did not implement it, thus I have no clue of the details. Maybe ckloss can answer your question.

At least I put it on the check-list for the next release.

Bests
Andreas

ckloss's picture

ckloss | Tue, 10/27/2015 - 15:27

Hi hcsgxl,

you are right - there is a dt missing. I'll correct this for the next release. Can you send me your affiliation with a short message via the "contact us" button so we can attribute the bugfix to you?

Thanks and best wishes
Christoph

Vineet522 | Mon, 03/04/2024 - 13:01

Which models are available for wear and/or erosion modelling ?

Andsva95 | Fri, 03/22/2024 - 11:14

To my knowledge it is only Finnies erosion model that is implemented in the public and PFM version.
However, i am wondering if someone has implemented the Archard model and would like to share the sourceCode?