|
||
|
|
||
Line force load models load distributed over a 1D member. It may be action along the whole 1D member or only on its part. Parameters of point load applied into a node are:
Items Direction and Angle may be combined together to obtain the required orientation of the load. The Direction specifies the base direction. The Angle then defines if and how the load is inclined from the base direction.
The syntax for item Angle is:
R[axis of rotation][angle]
E.g. Rx30 means to rotate the load around the X-axis by 30 angle units. Rz-20 means to rotate the load around the Z-axis by minus 20 angle units. The angle units can be adjusted in program Unit setup.
The meaning of the Value depends on the Type of load.
For Force load, the Value is the real value of the load.
For Wind load, the Value represents the loading width. The real wind pressure is defined by wind curve specified in the project settings.
For Snow load, the meaning is analogous to Wind load.
For Predefined load the meaning is analogous to Wind load.
The definition of load direction may be defined:
in the local co-ordinate system of a 1D member,
in a selected user-co-ordinate system,
in the global co-ordinate system.
The location depends on the setting of the System.
For local and user co-ordinate system, the location can be only Length.
However, for load defined in the global co-ordinate system, also a Projection may be selected.
For more information see chapter Direction of loads.
The location of the load on the 1D member may be defined in absolute or relative co-ordinates. If absolute co-ordinates are selected, the distance is defined in real length units set for the project. In the case of relative co-ordinates, the position of the load on the 1D member is defined by value from within the interval <0, 1>. In both cases, the distance is measured from the point defined in the Origin item.