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Why does an eccentrically set member receive axial forces although it is only loaded by shear forces?

Answer

If a member is connected eccentrically to a surface or to another member, you can also imagine that each node (RSTAB) and each FE node (RFEM) of each element is coupled with a member (see Figure 01 above). . The result is identical to that of the defined eccentricities (see Figure 01 below). The system shown in the picture is nothing more than a truss with a top flange and a bottom flange connected by verticals. As is known, the flanges are increasingly subjected to axial forces rather than bending moments due to the geometry (see Figure 02).

Keywords

Eccentric member Eccentricity Axial force Downstand beam

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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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