ASCE 7-16 Response Spectrum Analysis in RFEM 6
Information about the Free Webinar
Webinars provide the opportunity to gain expert knowledge and to ensure you’re getting the most out of your Dlubal programs.
Date | Time
Free Webinar | ASCE 7-16 Response Spectrum Analysis in RFEM 6
|02:07||Modal analysis of a multi-story building|
|20:57||Response spectrum analysis acc. to the ASCE 7-16|
|39:42||Additional results with the Building Model add-on|
|45:55||Base shear, drift, and P-Delta considerations|
|50:35||Result Combination definitions for further design|
Presentation Model to Download
Below, under Models to Download, you will find the model(s) used in the webinar. This will allow you to independently follow the webinar step by step with the provided model after the presentation is complete.
Amy Heilig, PE
CEO - USA Office
Sales & Technical Support Engineer
Amy Heilig is the CEO of the USA office located in Philadelphia, PA. In addition, she provides sales and technical support and continues to aid in the development of Dlubal Software programs for the North American market.
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Different Natural Frequencies Without Consideration (left) and with Consideration of Tension Members (right)
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.
- 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 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?
- How can I analyze the failure of an object, such as a column, in my modal analysis?
- Why do the results in a modal analysis differ between the initial prestress and the surface load?
- How can I perform an earthquake analysis in RFEM 6 and RSTAB 9?
- How can I display mode shapes in RFEM 6 and RSTAB 9?
- RF‑/DYNAM Pro - Forced Vibrations and RF‑/DYNAM Pro - Equivalent Loads perform the multi-modal response spectrum analysis. What are the differences?
- 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?
RFEM 6 structural analysis software is the basis of a modular software system. The main RFEM 6 program is used to define structures, materials, and loads of planar and spatial structural systems consisting of plates, walls, shells, and members. The program also allows you to create combined structures as well as to model solid and contact elements.
The Modal Analysis add-on allows you to quickly and conveniently analyze natural frequencies and mode shapes for member, surface, and solid models.
In the Response Spectrum Analysis add-on, seismic analysis is performed using multi-modal response spectrum analysis. The spectra required for this can be created in compliance with the standards or can be user-defined. The equivalent static forces are generated from this. The add-on includes an extensive library of accelerograms from seismic zones. These can be used to generate response spectra.
The RFEM Building Model add-on allows you to define and manipulate a building by means of stories. The stories can be adjusted in many ways afterwards. Information about the stories and the entire model (center of gravity) is displayed in tables and graphics.