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# compute smd/damage command¶

## Syntax¶

compute ID group-ID smd/damage

• ID, group-ID are documented in compute command

• smd/damage = style name of this compute command

## Examples¶

compute 1 all smd/damage


## Description¶

Define a computation that calculates the damage status of SPH particles according to the damage model which is defined via the SMD SPH pair styles, e.g., the maximum plastic strain failure criterion.

See this PDF guide to use Smooth Mach Dynamics in LAMMPS.

Output Info:

This compute calculates a per-particle vector, which can be accessed by any command that uses per-particle values from a compute as input. See the Howto output page for an overview of LAMMPS output options.

The per-particle values are dimensionless an in the range of zero to one.

## Restrictions¶

This compute is part of the MACHDYN package. It is only enabled if LAMMPS was built with that package. See the “Build

none