The Insert Nodes command is used to split an existing triangle or tetrahedral element into smaller elements by inserting a new node either midway along an edge of a triangle, or in the center of a triangle or tetrahedron.
To use this tool, click 
().
In the Input parameters section of the dialog, decide where you would like the new node created.
Select the nodes between which the new node is to be created.
In the Selection option section of the dialog, indicate whether you would like to use filtering and if so, the type of filtering.
Dialog elements
- Create new node at
- This group of options is used to specify where you want the new node to be inserted. The following options are available:
- Midpoint of triangle edge
- Select this option if you want to insert a node midway between the two nodes of an existing element edge.
- Center of triangle
- Select this option if you want to insert a node in the center of an existing triangle element.
- Center of tetrahedron
- Select this option if you want to insert a node in the center of an existing tetrahedral element.
- Node 1/2/3 (Insert Nodes)
- These text boxes specify the nodes between which a new node is to be created. Either two or three of the text boxes will be active depending on the Create new node at option you have selected. Note: The selected nodes must share the same element edge (Midpoint of triangle edge option) or belong to the same element (Center of triangle option).
For each text box, either enter "N" followed by the node number, for example N123, or select the node in the model display window.
- Tetra to split
- Specifies a tetrahedral element in the center of which a new node is to be created. This text box is only active if the Center of tetrahedron option is selected.
Either enter "TE" followed by the tetrahedral element number, for example TE123, or select the tetrahedral element in the model display window.