Determination of the deflection of a beam using the bending moment diagram and the funicular polygon: the bending moment diagram is cut in trapezoids, a force equal to the area is placed at the center of the trapezoid, and the finucular is drawn. This is a graphical double integration; the position of the pole is adjusted to have no deflection at the supports (boundary values). See <a href="//commons.wikimedia.org/wiki/File:Ballon_reflux_flexion.svg" title="File:Ballon reflux flexion.svg">File:Ballon reflux flexion.svg</a>
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<span class="int-own-work" lang="en">Own work</span>