> ## 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.

# Stress Constraint

<CardGroup cols={2}>
  <Card title="Scalar, Load case" href="#scalar-load-case" />

  <Card title="Scalar, Load case, 1.1.0" href="#scalar-load-case-110" />
</CardGroup>

***

<h2 id="scalar-load-case">
  Scalar, Load case
</h2>

Define a stress constraint for a topology optimization process.

### Inputs

| Name         | Type                                                                                | Description                                                                                       |
| ------------ | ----------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
| Stress limit | [Scalar](../../../../block-documentation/types/scalar)                              | The stress limit. The Von Mises stress will be less than or equal to this value.                  |
| Load case    | [Boundary Condition List](../../../../block-documentation/types/boundary-condition) | The load case for the stress constraint. A load case is defined as a list of boundary conditions. |

### Outputs

| Type                                                                         |
| ---------------------------------------------------------------------------- |
| [Design Constraint](../../../../block-documentation/types/design-constraint) |

***

<h2 id="scalar-load-case-110">
  Scalar, Load case, 1.1.0
</h2>

Define a stress constraint for a topology optimization process.

### Inputs

| Name         | Type                                                                                | Description                                                                                       |
| ------------ | ----------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
| Stress limit | [Scalar](../../../../block-documentation/types/scalar)                              | The stress limit. The Von Mises stress will be less than or equal to this value.                  |
| Load case    | [Boundary Condition List](../../../../block-documentation/types/boundary-condition) | The load case for the stress constraint. A load case is defined as a list of boundary conditions. |

### Outputs

| Type                                                                         |
| ---------------------------------------------------------------------------- |
| [Design Constraint](../../../../block-documentation/types/design-constraint) |