Check out these tips to help you get started with the RFEM program.
KB 001793 | Modal Analysis in RFEM 6 Using a Practical Example
Video
First Steps with RFEM
Description
Modal analysis is the starting point for the dynamic analysis of structural systems. This video shows you a summary of how to perform a modal analysis in RFEM 6.
Keywords
Dlubal Knowledge Base Modal analysis Natural vibrations Natural frequencies Dlubal KB Knowledge Base Technical article construction Civil engineering Structural engineer Structural Design Structural designer Structural analysis Structural Engineer RFEM 6 RSTAB 9 Dlubal Software
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Modal Analysis in RFEM 6 Using a Practical Example
Modal analysis is the starting point for the dynamic analysis of structural systems. This article shows you a summary of how to perform a modal analysis in RFEM 6.
New
Modal Analysis | Visualization and Standardization of Mode Shapes
As already mentioned, the results of a Modal Analysis load case are displayed in the program after a successful calculation. Hence, you can immediately see the first mode shape graphically or as an animation. The representation of the mode shape standardization can be easily adjusted. You can do this directly in the Results navigator, where you should select one of the three options for the visualization of the mode shapes: scale the value of the mode shape vector uj to 1 (considers only the translation components); select the maximum translational component of the eigenvector and set it to 1; or consider the entire eigenvector (including the rotation components), select the maximum, and set it to 1.- Is the German National Annex 2021‑07 to Eurocode 8 available in RFEM 5 / RSTAB 8?
- Can I export a response spectrum from RFEM 6 and use it in RFEM 5, for example?
- How can I analyze the failure of an object, such as a column, in my modal analysis?
- How can I neglect masses in my modal analysis in RFEM 6 / RSTAB 9?
- Where can I adjust the standardization of a mode shape in RFEM 6 / RSTAB 9?
- Why do the results in a modal analysis differ between the initial prestress and the surface load?
- How can I display mode shapes in RFEM 6 and RSTAB 9?
- How can I perform an earthquake analysis in RFEM 6 and RSTAB 9?
- What is the meaning of the superposition according to the CQC rule in a dynamic analysis??
- There are two different add-on modules for a response spectrum analysis in RF‑/DYNAM Pro. What can be the reasons for the different results of both add-on modules?
