Interaction

[Nedam1]

Hello dear asdea team,
I need to model some stone columns in the soil profile containing 2 layers, Actually these columns are completely burried.
I modeled these columns in a completely different way than yours. Actually for creating them,
At first, I created 2 cubes as soil layers.
2-I drew cylinders into cubes (soil layers),
3- Using "subtract" command, I removed the cylinders from the soil and again filled removed cylinders.
I have some questions:
1)Is above procedure true for building the geometry of model?
2)As the columns are completely burried, Is it necessary to create 4 interactions for each columns (2 interactions for around and top the column in the first layer and 2 interactions for around and bottom the column in the second layer)?
3)As I understood from your pile group example, the interaction around the column with the soil should be of "node to element" type and the interaction of top and bottom of columns with the soils should be of " node to node" type?
For the interaction around columns I choosed "column "solid"" as master and "soil "face"" as slave,
For top and bottom, I choosed "face" of column and soil as master and slave,
Is this procedure true?
4) Finally, I feel the interaction that I built is not true. In your example the interaction of base has a different figure.
Thank you so much in advance

[STKO Team]

1)Is above procedure true for building the geometry of model?

It depends, if you want to model the columns as solid elements, than it's fine

2)As the columns are completely burried, Is it necessary to create 4 interactions for each columns (2 interactions for around and top the column in the first layer and 2 interactions for around and bottom the column in the second layer)?

Interactions are only necessary if you have to model some particular kinematic interaction between two objects (for example contact). Instead, if you want to assume a perfect bond, it's not necessary: you can simply merge the soil and column geometries.

3)As I understood from your pile group example, the interaction around the column with the soil should be of "node to element" type and the interaction of top and bottom of columns with the soils should be of " node to node" type?
For the interaction around columns I choosed "column "solid"" as master and "soil "face"" as slave,
For top and bottom, I choosed "face" of column and soil as master and slave,
Is this procedure true?

It depends. In our example the column was modeled as a beam, and the interaction (I think) was contact. In that case, the master geometry is the beam element.
If you model the column as a solid, and the mesh of the column is compatible with the mesh of the soil, then you can simply use a node-node interaction.


Try to explain in detail what you want to model so that we can give you advice

[Nedam1]

Thank you so much for your quick responding,

Should we first create interaction and then mesh or vice versa?
According to manual, I first creat the interaction.

[STKO Team]

Every time you modify a geometry or an interaction, the previous mesh is deleted, and you need to re-mesh the model