Point force
Instances of StructuralPointAction define a point load applied to the node (StructuralPointConnection) and also the location of the point load on a 1D member (StructuralCurveMember).
The point force can be defined in three main directions (global or local coordinate system). Every point force has to be assigned to a load case.
| Column header | Data type | Example / enum definition | Required | Description |
|---|---|---|---|---|
| Name | String | F3 | yes | Human readable unique name of the force |
| Type | String | Standard | no | This property defines what the load is caused by, E.g. Standard, Wind, Snow, Self weight, Hoar Frost, Predefined, Plane Load, Water Pond, Water Pressure, Soil Pressure, Generated Water, Generated Soil |
| Direction | Enum | X Y Z Vector |
yes | Specifies the base direction of the load X, Y, Z - action will be applied in one of these directions Vector - size and direction calculated from vector |
| Force action | Enum | On beam In node |
yes | Specifies on which type of object the force acts |
| Reference node | String | N3 | yes, if Force action = In node | The name of the reference node |
| Reference member | String | B1 | yes, if Force action = On beam | The name of the reference member |
| Value [kN] | Double | -150 | yes, if Direction = X,Y or Z | Specifies the size of the load in, acts in one direction |
| Vector (X;Y;Z) [kN] | String | (10;10;0) | yes, if Direction = Vector | Specifies the size of the load in , direction by vector |
| Load case | String | LC2 | yes | The name of the load case to which the force belongs |
| Coordinate system | Enum | Global Local |
yes | Defines the co-ordinate system of the member in which the load is applied For " Local", coordinate system is defined by node or 1D member |
| Origin | Enum | From start From end |
yes, if Force action = On beam | Specifies where the origin for the position co-ordinate measurement is |
| Coordinate definition | Enum | Absolute Relative |
yes, if Force action = On beam | Specifies the definition of the position. It may be absolute or relative |
| Position x [m] | Double | value in meters for Coordinate definition = Absolute 5.25 value in percentage for Coordinate definition = Relative 1.0 |
yes, if Force action = On beam | Defines the position of the load on the 1D member in local coordinate system in relative or in absolute coordinates [m] |
| Repeat (n) | Integer | 0 | yes, if Force action = On beam | Defines the number of forces acting on the beam. If the number is greater than 1, the forces are distributed uniformly over the 1D member |
| Delta x [m] | Double | 0.3 | yes, if Repeat (n) > 1 | Defines the distance between forces acting on the 1D member in relative or in absolute coordinates [m] (only applicable when ForceAction = OnBeam) |
| Id | String | 39f238a5-01d0-45cf-a2eb-958170fd4f39 | no | Unique attribute designation |
An example of use of Repeat (n) is given below. The forces are distributed uniformly meaning that the value Delta x is used for uniform distribution along the 1D member for multiple point forces.
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Local coordinate system for a node cannot be defined in SAF so far. It is asumed to be the same as the global coordinate system.