Differently Acting Load Cases for Automatically Created Combinations

Technical Article on the Topic Structural Analysis Using Dlubal Software

  • Knowledge Base

Technical Article

For the automatic load case combination in RFEM and RSTAB, you have to enter the possible interaction of load cases. In addition to the simultaneous or alternative occurrence of all load cases of an action, an option for different combination conditions is possible.

Differently Acting Load Cases

For a simultaneous action of load cases, cases may occur individually or together in a combination; in the case of an alternative action, only one load case of this action is possible. If this general definition is not sufficient for the load cases of an action, the different action can be defined by means of groups. An additional column is displayed that allows you to assign load cases to groups.

Within a group, the load cases are combined as alternatives to each other. Thus, only one load case from a group is considered when creating a combination. For the groups among themselves, the simultaneous combination rules apply, so one load case from each group could be contained in a combination.

If load cases are not assigned to a group ("-"), the simultaneous action applies to these load cases both among themselves and in relation to the groups.

Further relations of load cases can also be defined over all actions in the combination expressions.

Author

Dipl.-Ing. Oliver Müller

Dipl.-Ing. Oliver Müller

Product Engineering & Customer Support

Mr. Müller is responsible for the development of the add-on modules for steel structures and provides technical support for our customers.

Keywords

Combinatorics Load combination Result combination Differently Alternatively Action Load Cases

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  • Updated 27 April 2021

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