> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# FE Lattice Connector

Create an FE Connector, in this case a tie constraint, between a solid and lattice FE Mesh. This is useful when simulating a lattice using beam elements and the connecting structure as a solid. Using the provided lattice region, this function will attempt to automatically find the nodes on the lattice mesh that should be connected to the nearby faces of the solid mesh. Within the tie constraint, the rotational degrees-of-freedom are connected by default.

### Inputs

| Name           | Type                                                                 | Description                                                                                                                                                                                                                                                                                                                                                        |
| -------------- | -------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Lattice mesh   | [FE Mesh](../../../../block-documentation/types/fe-mesh)             | The input lattice mesh defined by beam elements.                                                                                                                                                                                                                                                                                                                   |
| Fe volume mesh | [FE Mesh](../../../../block-documentation/types/fe-mesh)             | The input FE volume mesh.                                                                                                                                                                                                                                                                                                                                          |
| Lattice region | [Implicit Body](../../../../block-documentation/types/implicit-body) | The region containing the lattice mesh. This is the body used to automatically detect which nodes of the lattice should be connected to which faces of the solid elements. It is important that this region accurately represent the volumetric body of the lattice. This should typically be the same body used to trim the beam lattice earlier in the workflow. |
| Tolerance      | [Scalar](../../../../block-documentation/types/scalar)               | The search tolerance used when attempting to automatically detect the correct lattice nodes and solid element faces. If the result of this function does not detect all the required nodes, try increasing this tolerance.                                                                                                                                         |

### Outputs

| Type                                                         |
| ------------------------------------------------------------ |
| [Connector](../../../../block-documentation/types/connector) |