> ## 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.

# Shell Attribute

<CardGroup cols={2}>
  <Card title="Scalar Field, Isotropic Material, Implicit Body, 1.1.0" href="#scalar-field-isotropic-material-implicit-body-110" />

  <Card title="Scalar Field, Material, Implicit Body" href="#scalar-field-material-implicit-body" />
</CardGroup>

***

## About this Block

**What it does:** Applies material and thickness attributes to shell elements.

**Common uses:**

* An input in [**Solid Domain**](/block-documentation/blocks/structures/model/solid-domain.html).

**Tips:**

* You can use multiple FE Attributes in an **Solid Domain**.
* If no Region is defined, the attribute applies the material to the entire mesh. Use the Region input to define a material in a specific area.
* When defining a Region for the attribute, all elements need an assigned attribute. Do this by providing one or more additional attributes for all regions, or at least one additional attribute without a Region to apply that attribute to all areas not covered by the first Region.
* You can use a Scalar Field to define the thickness of the shell.

## Example File

Download Example: [FE Shell Attribute](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/fe_attributes.ntop)
![FE Shell Attribute](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/fe_shell.png)

***

<h2 id="scalar-field-isotropic-material-implicit-body-110">
  Scalar Field, Isotropic Material, Implicit Body, 1.1.0
</h2>

Define shell thickness and material properties as attributes of shell elements.

### Inputs

| Name               | Type                                                                           | Description                                       |
| ------------------ | ------------------------------------------------------------------------------ | ------------------------------------------------- |
| Thickness          | [Scalar Field](../../../../block-documentation/types/scalar-field)             | The thickness at the nodes of the shell elements. |
| Isotropic material | [Isotropic Material](../../../../block-documentation/types/isotropic-material) | The underlying material.                          |
| Region             | [Implicit Body](../../../../block-documentation/types/implicit-body)           | The region this attribute applies to.             |

### Outputs

| Type                                                                     |
| ------------------------------------------------------------------------ |
| [Solid Attribute](../../../../block-documentation/types/solid-attribute) |

***

<h2 id="scalar-field-material-implicit-body">
  Scalar Field, Material, Implicit Body
</h2>

Apply attributes to shell elements.

### Inputs

| Name      | Type                                                                 | Description                                       |
| --------- | -------------------------------------------------------------------- | ------------------------------------------------- |
| Thickness | [Scalar Field](../../../../block-documentation/types/scalar-field)   | The thickness at the nodes of the shell elements. |
| Material  | [Material](../../../../block-documentation/types/material)           | The underlying material.                          |
| Region    | [Implicit Body](../../../../block-documentation/types/implicit-body) | The region this attribute applies to.             |

### Outputs

| Type                                                                     |
| ------------------------------------------------------------------------ |
| [Solid Attribute](../../../../block-documentation/types/solid-attribute) |