Free Area Load#
Creates free loads not explicitly associated with any element.
Modifies loads not explicitly associated with any element.
Creates or modifies an area load with up to 63 load points which is not associated with any element and can therefore be placed freely at any location.
A uniformly distributed load or variable (trapezoidal) load can be entered. Area load with more than 4 end points (polygonal loads) can only be entered as a uniformly distributed load.
Free area loads have a flat surface.
A detailed description of these properties can be found in the chapter ‘AREA – Free Area Loading’ of the manual SOFiLOAD.
For the creation of free area loads, the following options are available for use:
Corner points are selected for the free area load.
Pick Lines or Curves–Select Points
Creates a closed polygon as the boundary of the element. When selecting lines or curves, the input type can be
switched between either option by pressing the down key (as shown in the command line and at the cursor text). The picked
points can be selected from the drawing or can be entered using cartesian coordinates. During input, a preview is available.
The input can be ended by pressing the
enter key. In a 3D system, this option is only available for use in the XY plane,
although this need not be in the plane located at the origin.
After selection of a line or curve using the
Pick Lines or Curves option, it can be useful to select a point by which the
end of the next line is defined. The
Pick Points option is available in the context menu during input.
Creates a rectangular element with the input of two diagonally opposite points. In a 3D system, this option is only available for use in the XY plane, although this need not be in the plane located at the origin. Please note that the rectangle will always be created with reference to the current coordinate system. If a rotated rectangular area is to be created, the coordinate system must first be modified accordingly.
Point in Area
Creates a closed polygon as the boundary of an element. A point within a closed polygonal element can be input. The boundary lines of that closed element are used as the boundary for the element. Ensure that the boundary is closed and that the point selected is not too close to a re-entrant corner, since the program, in this case, may be unable to find the boundary. In 3D systems, this option is available only in the plane where the origin is currently defined.
Set Working Plane
Because certain selection options only are available in the current working plane, it is possible to rest the working plane to a user defined position. For this the following options are available:
3Points: The coordinate system is aligned by defining 3 points (origin, X-axis and Y-axis).
Element: The orientation of the coordinate system is set with the selection of an object.
The working plane remains in place until the command to create the element is closed.