Supports on 1D members
Object definition for a line support on a 1D member (StructuralCurveMember) or on a rib (StructuralCurveMemberRib). The support can be defined along the entire length of an edge or on its part only. This support is defined by six independent parameters. Each parameter defines the constraint in one direction: translation in X, Y, Z axis and rotation around the same axes. The parameters are the same as for line support on 2D memeber edge support (StructuralEdgeConnection).
| Column header | Data type | Example / enum definition | Required | 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. |
| Member | String | B1 | yes, if on Member | The name of the 1D member (StructuralCurveMember) to which is support related |
| Member Rib | String | R1 | yes, if on Rib | The name of the 1D member Rib(StructuralCurveMemberRib) to which is support related |
| 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. See Notes for direction of tension and compression. |
| 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. See Notes for direction of tension and compression. |
| 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. See Notes for direction of tension and compression. |
| 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. Go to Notes to see an example. |
| Coordinate definition | Enum | Absolute Relative |
yes | Selects the coordinate system that is used to define the length of the support. 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. 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 |
Tension and compression supports act only in a specific direction. Tension supports prevent the movement in the positive direction of an axis. Compression supports prevent the movement in the opposite direction. Those supports are compression only and tension only.
Support on a 1D member can be defined by local or global coordinate systems. Local coordinate system is the coordinate system of the 1D member (StructuralCurveMember or StructuralCurveMemberRib). See the image below for an example of tension only support defined by local coordinate system, it prevents the movement in the positive direction of the member's local axes.
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