This article was translated by Google Translator View original text

In my model, the sum of the support forces differs from the internal forces in the result beam. What is the reason for this?

Answer

Especially if you have modeled walls by means of surfaces, there may be a deviation between the sum of the support forces and the shear forces in the result beam. This is because the internal forces in the surface are integrated into member internal forces. Depending on the size of the FE mesh, falsified or inaccurate results may occur.

You can use the following procedure to improve the results:

  • Reduce the size of the FE mesh. The deviations between the support forces and the shear forces should then approach 0.
  • Increase the division for the result diagrams in the calculation parameters. This also leads to an approximation of the results.
In the result diagrams, you can display a smooth line that smears the internal forces of the result beam over the entire length.

Keywords

Result beam Deviation Horizontal shear Earthquake Sum

Reference

Downloads

Contact us

Contact Dlubal Software

Did you find your question?
If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.

(267) 702-2815

info-us@dlubal.com

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

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

Main Program

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

Price of First License
2,550.00 USD