> ## 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.

# Solid Domain

<CardGroup cols={2}>
  <Card title="FE Mesh, Attributes" href="#fe-mesh-attributes" />

  <Card title="Implicit Body, Attributes" href="#implicit-body-attributes" />
</CardGroup>

***

## About this Block

**What it does:** The **Solid Domain** block assigns material attribute to either an FE Mesh or an Implicit Body to be used in an **FE Model**. Think of this block as a property container.

**Common uses:**

* A required input in [**Simulation Model**](/block-documentation/blocks/structures/model/simulation-model.html) for analysis workflows.

**Tips:**

* Requires a [**Beam Attribute**](/block-documentation/blocks/structures/material-attributes/beam-attribute.html), [**Shell Attribute**](/block-documentation/blocks/structures/material-attributes/shell-attribute.html), or [**Solid Attribute**](/block-documentation/blocks/structures/material-attributes/solid-attribute.html) to define the properties of the mesh.
* The **FE Solid Domain** and the **Lattice Domain** are built-in custom blocks optimized for solid models and lattices. These can replace the **Solid Domain** block.
* A **Solid Domain** block can auto convert (called autocast) to an **Simulation Model** when it is used in an input that requires an **Simulation Model**. This is useful for single component setups.

## Example File

Download Example: [Solid Domain](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/FEModel.ntop)
![FE Model](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/FEModel.png)

***

<h2 id="fe-mesh-attributes">
  FE Mesh, Attributes
</h2>

Create a Solid FE Domain by assigning Solid Attributes to an FE Mesh and checking if all the elements of the FE Mesh have corresponding attributes assigned to them.

### Inputs

| Name       | Type                                                                          | Description                     |
| ---------- | ----------------------------------------------------------------------------- | ------------------------------- |
| Mesh       | [FE Mesh](../../../../block-documentation/types/fe-mesh)                      | The finite element mesh.        |
| Attributes | [Solid Attribute List](../../../../block-documentation/types/solid-attribute) | The list of element attributes. |

### Outputs

| Type                                                         |
| ------------------------------------------------------------ |
| [FE Domain](../../../../block-documentation/types/fe-domain) |

***

<h2 id="implicit-body-attributes">
  Implicit Body, Attributes
</h2>

Creates a Solid Domain by assigning Solid Attributes to an Implicit Body.

### Inputs

| Name       | Type                                                                          | Description                   |
| ---------- | ----------------------------------------------------------------------------- | ----------------------------- |
| Body       | [Implicit Body](../../../../block-documentation/types/implicit-body)          | The Implicit Body.            |
| Attributes | [Solid Attribute List](../../../../block-documentation/types/solid-attribute) | The list of Solid Attributes. |

### Outputs

| Type                                                                   |
| ---------------------------------------------------------------------- |
| [Virtual Domain](../../../../block-documentation/types/virtual-domain) |