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Dipl.-Ing. (BA) Markus Baumgärtel
2019-02-19

Unrealistic Moment Hinge Reactions Due to Nodal Errors

In my model, there are members that obtain member end moments on releases despite the moment releases. How could that be?

Answer:

Please check the torsions in nodes: sometimes the members are not connected correctly at the nodal points (minimal inaccuracies) and two nodes are very close to each other (see the image). This results in unrealistically large torsions about the member axis, which cause these moments.

Unconnected Members
Unconnected Members

Author

Mr. Baumgärtel provides technical support for Dlubal Software customers.

References
  1. Dlubal Software. (2018). Manual RFEM. Tiefenbach.
  2. Dlubal Software. (2016). Manual RSTAB. Tiefenbach: Dlubal Software.
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