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FAQ 002681 EN-US 03/25/2019

Daniel Dlubal Results RFEM RSTAB

Why is the bending moment characteristic in the oblique bar different to my hand calculation? Normally there should be no bending moments.

Answer

The reason for the occurrence of a bending moment in the oblique and straight bar is that the middle post has a certain flexibility due to its finite rigidity. Thus, compression takes place at the middle support, so that the deformation of the middle support also affects the right-hand latch. Because the right-hand latch is additionally held on a movable support, a forced moment arises at this point.

One recognizes it above all by the respective deformations. See also

The calculation by means of RFEM results in minimum bending moments, which however are not taken into account in the manual calculation.

Keywords

Bending moment Forces Results

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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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RSTAB Main Program
RSTAB 8.xx

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The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

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2,550.00 USD