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In my model, the sum of the support forces differs from the internal forces in the result beam. Why?


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.


result beam Deviation horizontal shear Earthquake Wind Total Dynamics



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