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004447
2020-06-16

Dynamic analysis according to second-order theory

Is it possible to consider the second-order theory in a dynamic analysis in RSTAB?


Answer:
There is a detailed technical article for considering the second-order theory in a dynamic analysis with RFEM 5 (see the link at the end of the FAQ). This article describes primarily the usage of the RF‑DYNAM Pro - Equivalent Loads add-on module. This add-on module does not allow for any consideration in RSTAB 8.

In order to correctly display the second-order theory in RSTAB 8, it is necessary to use the DYNAM Pro - Forced Vibrations add-on module. In this add-on module, the results are fully calculated within the add-on module. If you wanted to export the load cases first, the internal forces could not be calculated with regard to the modified stiffness matrix.

Author

Ms. Effler is responsible for the development of products for dynamic analysis and provides technical support for our customers.

Links
References
  1. Handbuch RF-DYNAM Pro. Tiefenbach: Dlubal Software, Januar 2020.
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