# compute smd/plastic/strain/rate command

## Syntax

compute ID group-ID smd/plastic/strain/rate

• ID, group-ID are documented in compute command

• smd/plastic/strain/rate = style name of this compute command

## Examples

compute 1 all smd/plastic/strain/rate


## Description

Define a computation that outputs the time rate of the equivalent plastic strain. This command is only meaningful if a material model with plasticity is defined.

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 doc page for an overview of LAMMPS output options.

The per-particle values will be given in units of one over time.

## Restrictions

This compute is part of the USER-SMD package. It is only enabled if LAMMPS was built with that package. See the Build package doc page for more info. This compute can only be used for particles which interact via the updated Lagrangian or total Lagrangian SPH pair styles.