Is there any option to generate a "response spectrum according to the standard" with user-defined parameters in the RF‑DYNAM Pro add-on module?
Answer
Keywords
Response spectrum Standard User-defined Parameter Other
Reference
Contact us
Did you find your question?
If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.
Recommended Events
Eurocode 2 | Concrete structures according to DIN EN 1992-1-1
Online Training 19 February 2021 8:30 AM - 12:30 PM CET
RFEM | Structural dynamics and earthquake design according to EC 8
Online Training 24 February 2021 8:30 AM - 12:30 PM CET
Eurocode 5 | Timber structures according to EN 1995-1-1
Online Training 17 March 2021 8:30 AM - 12:30 PM CET
Eurocode 3 | Steel structures according to DIN EN 1993-1-1
Online Training 18 March 2021 8:30 AM - 12:30 PM CET
Eurocode 3 | Steel structures according to DIN EN 1993-1-1
Online Training 6 May 2021 8:30 AM - 12:30 PM
Eurocode 2 | Concrete structures according to DIN EN 1992-1-1
Online Training 11 May 2021 8:30 AM - 12:30 PM
Eurocode 5 | Timber structures according to DIN EN 1995-1-1
Online Training 20 May 2021 8:30 AM - 12:30 PM
RFEM | Structural dynamics and earthquake design according to EC 8
Online Training 2 June 2021 8:30 AM - 12:30 PM
Videos
Models to Download
Knowledge Base Articles

NBC 2015 Modal Response Spectrum Analysis and Base Shear Considerations
The National Building Code of Canada (NBC) 2015 Article 4.1.8.7 provides a clear procedure for earthquake methods of analysis.
Screenshots
Product Features Articles

Conversion of Lehr's Damping into Rayleigh Damping
Calculation with consideration of a damping ratio (or Lehr's damping) is not possible in the direct time step integrations. Instead, the Rayleigh damping coefficients must be specified by the user.
In technical literature, the given damping ratio for specific construction forms is in many cases only a rough approximation of the real damping ratios. In RF-/DYNAM Pro - Forced Vibrations, it is possible to use the value of damping ratio to determine the Rayleigh damping. This may occur at one or two natural angular frequencies defined by the user.
Frequently Asked Questions (FAQ)
- How can I enter or read out a response spectrum via the COM interface in DYNAM Pro?
- Which programs can I use to calculate and design power plants?
- I noticed deviations from the map of DIN EN 1998‑1 or DIN 4149 in the online service "<a href="https://www.dlubal.com/en/solutions/online-services/snow-load-wind-speed-and-seismic-load-maps" target="_blank">Geo-Zone Tool: Snow, Wind, and Seismic Zone Maps</a>." Can you tell me which map is current and thus governing?
- How do you distinguish between the response spectra with equivalent loads and the response spectra without equivalent loads in RFEM and RSTAB?
- I would like to design an aluminum or lightweight structure. Is it possible to use RFEM or RSTAB for this?
- Why do I only obtain the seismic loads calculated in one direction in the case of design with RF‑/DYNAM Pro?
- Are the models and presentations from Info Day 2020 freely available, and can you send them to me?
- During the check in RF‑/DYNAM Pro, I get the message "No natural vibration case or dynamic load case has been selected for the calculation." Why?
- Is it possible to also create a user-defined response spectrum in RF‑/DYNAM Pro?
- Are the models and presentations from Info Day 2017 freely available, and can you send them to me?