# StructuralCurveActionThermal

## Thermal load on the beam

The thermal load on the line elements ([StructuralCurveMember](https://gitbook.saf.guide/structural-analysis-elements/structuralcurvemember#1d-member-beam-column), [StructuralCurveMemberRib](https://gitbook.saf.guide/structural-analysis-elements/structuralcurvememberrib#2d-member-rib)). The variation of the thermal load can be constant or linear over the cross-section of the beam.

### Specification in the excel

| Name of the column header | Type of data |                                                         Value example or enum definition                                                        | Required value                 | Description                                                                                                                                                                                                                                                                                                                                                                                                            |
| ------------------------- | ------------ | :---------------------------------------------------------------------------------------------------------------------------------------------: | ------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Name                      | String       |                                                                       LT1                                                                       | yes                            | Human readable unique name of the load                                                                                                                                                                                                                                                                                                                                                                                 |
| Force action              | Enum         |                                                           <p>On beam</p><p>On rib</p>                                                           | yes                            | Specifies on which type of object the load acts.                                                                                                                                                                                                                                                                                                                                                                       |
| Variation                 | Enum         |                                                           <p>Constant</p><p>Linear</p>                                                          | yes                            | <p>Specifies how the temperature varies</p><p>Constant: The load is defined by means of a single value deltaT. The value specifies the warming to which the 1D member is subject to.</p><p>Linear: The load is defined by means of a set of four values. The individual values specify the temperature at individual sides (left, right, top, bottom) of the 1D member.</p>                                            |
| deltaT \[°C]              | Double       |                                                                        5                                                                        | yes; if Variation = Constant   | <p>Temperature delta in Celsius/Fahrenheit on the centre line of the member.</p><p>\*See note to clarify the position.</p>                                                                                                                                                                                                                                                                                             |
| TempL \[°C]               | Double       |                                                                        5                                                                        | yes, if Variation = Linear     | <p>The temperature on the left side of the beam surface in Celsius/Fahrenheit. Refers to LCS of 1D member.</p><p>\*See note to clarify the position.</p>                                                                                                                                                                                                                                                               |
| TempR \[°C]               | Double       |                                                                        18                                                                       | yes, if Variation = Linear     | <p>Temperature on right side of the beam surface in Celsius/Fahrenheit. Refers to LCS of 1D member.</p><p>\*See note to clarify the position.</p>                                                                                                                                                                                                                                                                      |
| TempT \[°C]               | Double       |                                                                        5                                                                        | yes, if Variation = Linear     | <p>Temperature on top side of the beam surface in Celsius/Fahrenheit. Refers to LCS of 1D member.</p><p>\*See note to clarify the position.</p>                                                                                                                                                                                                                                                                        |
| TempB \[°C]               | Double       |                                                                        5                                                                        | yes, if Variation = Linear     | <p>Temperature on bottom side of the beam surface in Celsius/Fahrenheit. Refers to LCS of 1D member.</p><p>\*See note to clarify the position.</p>                                                                                                                                                                                                                                                                     |
| Member                    | String       |                                                                       B11                                                                       | yes, if Force action = On beam | The name of the [StructuralCurveMember](https://gitbook.saf.guide/structural-analysis-elements/structuralcurvemember#1d-member-beam-column) on which the load is applied                                                                                                                                                                                                                                               |
| Member Rib                | String       |                                                                       B10                                                                       | yes, if Force action = On rib  | The name of the [StructuralCurveMemberRib](https://gitbook.saf.guide/structural-analysis-elements/structuralcurvememberrib#2d-member-rib) on which the load is applied                                                                                                                                                                                                                                                 |
| Load case                 | String       |                                                                       LC1                                                                       | yes                            | The name of the load case to which the load belongs                                                                                                                                                                                                                                                                                                                                                                    |
| Coordinate definition     | Enum         |                                                          <p>Absolute</p><p>Relative</p>                                                         | yes                            | Selects the coordinate system that is used to define the length of the line load. Relative means without units. To define length of the load in meters input absolute                                                                                                                                                                                                                                                  |
| Origin                    | Enum         |                                                         <p>From start</p><p>From end</p>                                                        | yes                            | Specifies the origin of the coordinate system used for the definition of the length of the load                                                                                                                                                                                                                                                                                                                        |
| Start point \[m]          | Double       |  <p>value in meters for Coordinate definition = Absolute</p><p>0,0</p><p>value in percentage for Coordinate definition = Relative</p><p>0,0</p> | yes                            | Defines the position of the start point of the load in relative or absolute coordinates                                                                                                                                                                                                                                                                                                                                |
| End point \[m]            | Double       | <p>value in meters for Coordinate definition = Absolute</p><p>5,25</p><p>value in percentage for Coordinate definition = Relative</p><p>1,0</p> | yes                            | Defines the position of the end point of the load in relative or absolute coordinates                                                                                                                                                                                                                                                                                                                                  |
| Parent ID                 | String       |                                                       67b35d84-3d04-47aa-aa4a-dc1263982320                                                      | no                             | <p>Is filled for objects created be dividing curved geometry to series of straight line objects.<br><br>Parent ID will ensure that curved edge is imported as straight parts to nonsupporting application, and back to original supporting application as curved geometry.</p><p>To ensure successful round trip of segmented objects and their related objects, Parent ID needs to be present in both directions.</p> |
| Id                        | String       |                                                       39f238a5-01d0-45cf-a2eb-958170fd4f39                                                      | no                             | Unique attribute designation                                                                                                                                                                                                                                                                                                                                                                                           |

## Notes

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Reference to surfaces of cross-section where linear temperature can be applied. View is towards the direction of center axis (looking from end point towards start point).
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