LAMMPS WWW Site - LAMMPS Documentation - LAMMPS Commands

### compute smd/tlsph_strain_rate command

Syntax:

    compute ID group-ID smd/tlsph_strain_rate

- ID, group-ID are documented in compute command
- smd/tlsph_strain_rate = style name of this compute command

Examples:

    compute 1 all smd/tlsph_strain_rate

Description:

Define a computation that calculates the rate of the strain tensor for particles interacting via the Total-Lagrangian SPH pair style.

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

Output info:

This compute calculates a per-particle vector of vectors (tensors), which can be accessed by any command that uses per-particle values from a compute as input. See How-to discussions, section 6.15 for an overview of LAMMPS output options.

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

The per-particle vector has 6 entries, corresponding to the xx, yy, zz, xy, xz, yz components of the symmetric strain rate tensor.

Restrictions:

This compute is part of the USER-SMD package. It is only enabled if LAMMPS was built with that package. See the Making LAMMPS section for more info.

This quantity will be computed only for particles which interact with Total-Lagrangian SPH pair style.

Related commands:

smd/tlsph_strain, smd/tlsph_stress

Default: none