
ADM 2020 Aluminum Design in RFEM 6
05/25/2022
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Structural Analysis Wiki
Technical Terms Used in Dlubal Software
The Dlubal Structural Analysis Wiki explains technical terms used in structural analysis and design. The terms are given in alphabetical order and are usually used in Dlubal Software.
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The dynamic analysis in RFEM 6 and RSTAB 9 is divided into several add-ons. This article will show you some of the main features of the Modal Analysis Add-on for RFEM 6 / RSTAB 9.
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.
In RFEM 6, seismic analysis can be done by using the Modal Analysis and the Response Spectrum Analysis add-ons. Once the spectral analysis has been performed, it is possible to use the Building Model add-on to display story actions, interstory drifts, and forces in shear walls.
Seismic Analysis in RFEM 6 is possible by using the modal analysis and the response spectrum analysis add-ons. As a matter of fact, the general concept of the earthquake analysis in RFEM 6 is based on the creation of a load case for the modal analysis and the response spectrum analysis, respectively. The standard group for these analyses are set in the Standards II tab of the model’s Base Data.
Blast loads from high energy explosives, either accidental or intentional, are rare but may be a structural design requirement.
Product Features Articles
It is often necessary to neglect masses, especially when the output of the modal analysis is to be used by the seismic analysis, where 90% of the effective modal mass in each direction is required for the calculation. Thus, you can neglect masses in all fixed nodal and line supports so that the program will automatically deactivate the masses associated with them, but you can also manually select the objects for which the masses should be neglected in the modal analysis. The latter is shown in the image, where a user-defined selection is preferred, and the objects as well as their associated mass components are selected to neglect the masses.
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