Home > List of Keywords > *SLAMMING
*SLAMMING
Data format:
One line with seven parameters parameter:
INOD IGR CS AREA DT_SLAM DT_THRUST THRUSTER
Status:
Optional
Restriction:
The node INOD and group IGR must be previously defined for dynamic analysis only.
Purpose:
To add a slamming force at a specific node as the node crosses the water surface (wave included). The slamming force ia applied when the node reaches the surface based on the node velocity minus wave velocity (velocity is along the global Z-axis and must be downwards)
Details:
| Parameter | Description |
|---|---|
| INOD | Identification number of the node |
| IGR | Identification number of the group (to define added mass variation) |
| CS | slamming coefficient |
| AREA | Reference are to compute the slamming force |
| DT_SLAM | Time from water entry to apply the force (can be shorter if the nodes goes above water or relative velocity becomes positive) |
| DT_THRUSTER | Time to apply thruster force, must be greater than DT-SLAM |
| THRUSTER | Thruster force (N) negative downwards |
