# 7.15.1.18. Solid

Beta Capability

Material models for this capability are under active development hence this equation should be used with caution.

Syntax

  Eq Solid for Associated DoF [{of} SpeciesName | {in} MaterialPhaseName | {ls} {a | b | c}] {on} MeshPart using Interp with {Term_0} … {Term_N}

Scope

  Aria Region

Summary

  Activates the Conservation of Solid Momentum equation.

Description

  The only admissible value for Dof is `SOLID_DISPLACEMENTS`.

  Admissible values of Interp are .

  Admissible values of Term_n are `DIFF`, `TSTRAIN`, `SRC`, and `XFER`.

  With the exception of `XFER` these terms are described in Generalized Conservation Equation.

  If both the `MESH` and `SOLID` equations are defined in the same region, then the TALE mesh motion algorithm is activated automatically. In this case, the `MESH` equation must be defined on all blocks in the region. More details of the TALE method can be found in Conservation of Solid Momentum.

  The Meshpart must be an active element block.

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
{in} | {in | material_phase} | –
MaterialPhaseName | string | –
{ls} | {levelset_phase | ls} | –
Associated DoF | string | –
{on} | {@ | at | for | in | on | over} | –
MeshPart | string | –
Interp | string | –
{Term_n} | See Description | –