> For the complete documentation index, see [llms.txt](https://gitbook.saf.guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook.saf.guide/supports-and-hinges/structuraledgeconnection.md).
# StructuralEdgeConnection
## Supports on 2D members edges
Object definition for a line support on a 2D member ([StructuralSurfaceMember](/structural-analysis-elements/structuralsurfacemember.md#2d-member-plate-wall)) edge. The support can be defined along the entire length of an edge or on its part only.
### Specification in the excel
| Name of the column header | Type of data | Value example or enum definition | Required value | Description |
| -------------------------- | ------------ | :-------------------------------------------------------------------------------------------------------------------------------------------------: | ----------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Name | String | Sn6 | yes | Human readable unique name of the support |
| Type | Enum | Fixed
Hinged
Sliding
Custom
| no | Type of constraint support in general. Has just informative value. Actual boundary conditions are set per transition/rotation per direction. |
| Boundary condition | Enum | On edge
On subregion edge
On opening edge
| yes | Specifies on which type of object the force acts |
| 2D Member | String | S3 | yes, if Boundary condition = On edge | The name of the [StructuralSurfaceMember](/structural-analysis-elements/structuralsurfacemember.md#2d-member-plate-wall) of affected edge. |
| 2D Member Region | String | R1 | yes, if Boundary condition action = On subregion edge | The name of the [StructuralSurfaceMemberRegion](/structural-analysis-elements/structuralsurfacememberregion.md) on which is the load applied. |
| 2D Member Opening | String | O1 | yes, if Boundary condition action = On opening edge | The name of the [StructuralSurfaceMemberOpening](/structural-analysis-elements/structuralsurfacememberopening.md) on which is the load applied. |
| Edge | Integer | 1 | yes | The index of edge of the surface member. The index starting with 1. The order is according to order of “edges” property at [StructuralSurfaceMember](/structural-analysis-elements/structuralsurfacemember.md#2d-member-plate-wall), [StructuralSurfaceMemberRegion](/structural-analysis-elements/structuralsurfacememberregion.md) or [StructuralSurfaceMemberOpening](/structural-analysis-elements/structuralsurfacememberopening.md) |
| ux | Enum | Free
Rigid
Flexible
Compression only
Tension only
| yes | Translation in X direction.
Free - That is it imposes no constraint in the direction. Rigid - The connection in fully rigid in the specified direction. Flexible - The connection is flexible (elastic) in the specified direction. Parameter Flexible can be linear only, non-linearity is not supported. Compression only acts only under compression. If the support gets under tension it stops acting. Tension only support acts only under tension.
|
| uy | Enum | Free
Rigid
Flexible
Compression only
Tension only
| yes | Translation in Y direction.
Free - That is it imposes no constraint in the direction. Rigid - The connection in fully rigid in the specified direction. Flexible - The connection is flexible (elastic) in the specified direction. Parameter Flexible can be linear only, non-linearity is not supported. Compression only acts only under compression. If the support gets under tension it stops acting. Tension only support acts only under tension.
|
| uz | Enum | Free
Rigid
Flexible
Compression only
Tension only
| yes | Translation in Z direction.
Free - That is it imposes no constraint in the direction. Rigid - The connection in fully rigid in the specified direction. Flexible - The connection is flexible (elastic) in the specified direction. Parameter Flexible can be linear only, non-linearity is not supported. Compression only acts only under compression. If the support gets under tension it stops acting. Tension only support acts only under tension.
|
| fix | Enum | Free
Rigid
Flexible
| yes | Rotational stiffness around X axis. Parameter Flexible can be linear only, non-linearity is not supported. |
| fiy | Enum | Free
Rigid
Flexible
| yes | Rotational stiffness around Y axis. Parameter Flexible can be linear only, non-linearity is not supported. |
| fiz | Enum | Free
Rigid
Flexible
| yes | Rotational stiffness around Z axis. Parameter Flexible can be linear only, non-linearity is not supported. |
| Stiffness X \[MN/m2] | Double | 100 | yes, if Translation X = Flexible | The flexibility of the connection in X direction. Use this property only if the Translation X direction is Flexible. |
| Stiffness Y \[MN/m2] | Double | 100 | yes, if Translation Y = Flexible | The flexibility of the connection in Y direction. Use this property only if the Translation Y direction is Flexible. |
| Stiffness Z \[MN/m2] | Double | 100 | yes, if Translation Z = Flexible | The flexibility of the connection in Z direction. Use this property only if the Translation Z direction is Flexible. |
| Stiffness Fix \[MNm/rad/m] | Double | 50 | yes, if Rx = Flexible | The flexibility in rotation of the connection around local X axis. Use this property only if the Rotational stiffness Rx is Flexible. |
| Stiffness Fiy \[MNm/rad/m] | Double | 50 | yes, if Ry = Flexible | The flexibility in rotation of the connection around local Y axis. Use this property only if the Rotational stiffness Ry is Flexible. |
| Stiffness Fiz \[MNm/rad/m] | Double | 50 | yes, if Rz = Flexible | The flexibility in rotation of the connection around local Z axis. Use this property only if the Rotational stiffness Rz is Flexible. |
| Coordinate system | Enum | Global
Local
| yes | Defines the co-ordinate system of the member in which the support is applied |
| Coordinate definition | Enum | Absolute
Relative
| yes | Selects the coordinate system that is used to define the length of the hinge. Relative means without units. For define length of the hinges in meters input absolute |
| Origin | Enum | From start
From end
| yes | Specifies the origin of the coordinate system used for the definition of the length of the hinge |
| Start point \[m] | Double | value in meters for Coordinate definition = Absolute
0,0
value in percentage for Coordinate definition = Relative
0,0
| yes | Defines the position of the start point of the support in relative or absolute coordinates \[m] |
| End point \[m] | Double | value in meters for Coordinate definition = Absolute
5,25
value in percentage for Coordinate definition = Relative
1,0
| yes | Defines the position of the end point of the support in relative or absolute coordinates \[m] |
| Parent ID | String | 67b35d84-3d04-47aa-aa4a-dc1263982320 | no | Is filled for objects created be dividing curved geometry to series of straight line objects.
Parent ID will ensure that curved edge is imported as straight parts to nonsupporting application, and back to original supporting application as curved geometry.
To ensure successful round trip of segmented objects and their related objects, Parent ID needs to be present in both directions.
|
| Id | String | 39f238a5-01d0-45cf-a2eb-958170fd4f39 | no | Unique attribute designation |