# /ALE/GRID/DISP

Block Format Keyword The displacement of a grid node depends on the displacements of the neighboring grid nodes.

## Format

(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
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/ALE/GRID/DISP | |||||||||

U_{max} |
|||||||||

V_{min} |

## Definition

Field | Contents | Si Unit Example |
---|---|---|

U_{max} |
Maximum absolute grid
velocity. Default = -10 |
$\left[\frac{\text{m}}{\text{s}}\right]$ |

V_{min} |
Elements with a volume
less than V_{min} will
be deleted.Default = -10 |
$\left[{\text{m}}^{3}\right]$ |

## Comments

- Grid nodes displacement depends
on the displacement of the neighboring nodes based on the following
equation:$$w\left(t+\delta t\right)=\frac{1}{N}{\displaystyle \sum _{j}{w}_{j}(t)}$$
- Further explanation about this formulation can be found in ALE Formulation in the Radioss Theory Manual.