1664x
002511
2019-02-26

Question

When I look at the results of deformation analyses in the SLS of the add-on modules in the RSTAB working window, a higher value results for both local and global deformation in the Z-direction than in the add-on modules.


Answer:

When checking the deformation value, for example, as a result of the deformation analysis in STEEL EC3, it is necessary to subtract nodal deformations from the total deformation shown in RSTAB (see Image 01): the deformation value in the center of the member represents the total deformation of the component (the deformation of nodes plus the deformation of the component).

If the deformation is set as relative to the "undeformed system" in the Details of the serviceability limit state design in the add-on module (see Image 02), the maximum deformation including nodal deformations (the deformation value displayed in RFEM/RSTAB) is used.