Reaction forces
Reaction forces acting on constrained nodes can be saved at the end of a step and applied in subsequent steps:
The table below summarises the possible global directions of the reaction forces.
| Global direction | Description |
|---|---|
1 |
Reaction force in x1-direction |
2 |
Reaction force in x2-direction |
3 |
Reaction force in x3-direction |
w1 |
Fluid reaction force in x1-direction |
w2 |
Fluid reaction force in x2-direction |
w3 |
Fluid reaction force in x3-direction |
Save reaction forces
*Save reaction force
<node set name>, <Global direction>
With this option, the reaction forces at the end of the current step are saved in the memory and can be used in a subsequent step. The entries of the <subsequent lines> are the name of the node set <node set name>, and the global direction <Global direction {1,2,3}> in case of reaction forces of the solid phase or the global direction <Global direction {w1,w2,w3}> in case of reaction forces of the fluid phase if elements discretising fluid displacement are used. Only if the reaction force was saved for a set and it's direction it can be used in a subsequent step (see *Reaction force).
Apply reaction forces
*Reaction force
<node set name>, <Global direction>
With this option, the reaction forces from a previous step are imposed to the specified set. The entries of the <subsequent lines> are the name of the node set <node set name>, and the global direction <Global direction {1,2,3}> in case of reaction forces of the solid phase or the global direction <Global direction {w1,w2,w3}> in case of reaction forces of the fluid phase if elements discretising fluid displacement are used. Only if the reaction force was saved for a set and it's direction it can be used. The <amplitude type> is mandatory.