I have generated a load from area load on circular opening. If the radius is 1.0 m and the load is 10 kN/m², the resultant should be 31.416 kN. The recalculated load on the line should be 5.0 kN/m. However, the value of the converted load is 4,968 kN/m. Why?


The inaccuracy is caused by the fact that RFEM calculates the area of the circle approximately by dividing the boundary, that is, as a polygon. In this case, the result is 3.1214447 kN instead of 31.416 kN. On the other hand, the length of the boundary curve is calculated exactly as a circle.
If you need a graphically accurate number (that is, an image for the structural analysis), this can be solved by reducing the number of decimal places displayed.


Load From area loads on openings

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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

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3,540.00 USD