If I look at the results of deformation analyses in SLS of the add-on modules in the RSTAB working window, there is a higher value resulting 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 Figure 01): the deformation value in the centre 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 Details of the serviceability limit state design in the add-on module (see Figure 02), the maximum deformation including nodal deformations (the deformation value displayed in RFEM/RSTAB) is used.

Keywords

deformation analysis SLS deformation member deformation

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  • Updated 21 October 2020

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