Spatial and Planar Load Display

Technical Article

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In RFEM, structures can be modelled and analysed in a spatial environment. The permanent 3D visualization helps to better understand complex models and to represent the force flux. However, it is also possible to switch from a spatial mode to a planar sheet mode in the documentation of a calculation. For this, you have to describe the spatial calculation of the structure with all the necessary properties on ‘flat’ paper pages for an independent reader. Usually, you try to display the load actions and the corresponding results by using an orthogonal view of the substructure of the entire structure. Obviously, the load symbols depicted in the 3D mode in a view perpendicular to the load become unrecognizable due the missing expansion. In order to still be able to create a clear representation of all information, the corresponding adjustments are available in RFEM.

Concentrated load

In a spatial view, a localized load is displayed as a vector (dash with arrowhead) above the reference node or point. The vector length qualitatively indicates the size and the arrowhead the direction of the load. When you look in the direction of the load axis, the load symbol changes accordingly. When looking in the direction of the load, the program displays a circle in a circle and a circle with the center point in the opposite direction. For an exact indication of the load magnitude, it is possible to additionally write a numerical value in addition to the spatial and planar symbol.

Figure 01 - Diverse Display of Concentrated Load

Linear load

A line load is treated similarly to a point load. The spatial representation of a load on lines or members is represented by a framed group of vectors (dash with arrowhead) on the assigned line. The vector length qualitatively indicates the size and the arrowhead the direction of the load. The frame with optional shading about the load vectors should clarify the line reference. When you look in the direction of the load axis, the load symbol changes accordingly. When looking in the direction of the load, the program displays a crossed circle for all load vectors and a circle with center point in the opposite direction. For an exact specification of the load magnitude, it is possible to write the numerical value next to the combined load symbol.

Figure 02 - Diverse Display of Line Load

Flat load

The spatial representation of surface loads is a further development of the line loading. In the spatial representation, a framed vector of vectors is displayed above the boundary lines of the load. The vector length qualitatively indicates the size and the arrowhead the direction of the load. The frame with optional shading about the load vectors is supposed to show the outer edge of the surface load. This results in a block-shaped representation of the loading in the sum. Looking in the direction of the load, the encircling vectors are not converted into a crossed or dotted circle, but the line polygon around the arrowheads is displayed with an optional shading or hatching. The hatch is set in such a way that a separate type of hatch is used for each load magnitude. For an exact specification of the load magnitude, you can enter the numeric value at the edge or in the middle of the load icon.

Figure 03 - Diverse Display of Flat Load

Keywords

Load Representation Hatching Arrow Top Back

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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
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