fix_modify AtC track_displacement command — LAMMPS documentation

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# fix_modify AtC track_displacement command

## Syntax

    fix_modify <AtC fixID> track_displacement <on|off>

- AtC fixID = ID of fix atc instance

- track_displacement = name of the AtC sub-command

- on or off = (undocumented)

## Examples

    fix_modify AtC track_displacement on

## Description

Determines whether displacement is tracked or not. For solids problems this is a useful quantity, but for fluids it is not relevant.

## Restrictions

Some constitutive models require the displacement field.

## Related AtC commands

- fix_modify AtC command overview

## Default

on