Main Program RFEM or RSTAB
Recommended Add-ons for Structural Dynamic and Seismic Analysis
Response Spectrum Analysis
The Response Spectrum Analysis add-on performs seismic analysis 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 them. The add-on includes an extensive library of accelerograms from seismic zones that can be used to generate the response spectra.
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In the cross-section program RSECTION, you can define welds (fillet welds, corner fillet welds, lap fillet welds) for thin-walled cross-sections. For these sections, you can calculate the weld stresses.

In addition to the program login using your Dlubal account, you can optionally log in with your Microsoft account.

In RFEM and RSTAB, you can use parametric RSECTION cross-sections. If the corresponding parameters have been defined in RSECTION, you can easily modify them in RFEM/RSTAB.

In the Aluminum Design add-on, you can consider the localized strength reduction in the HAZ due to transverse welds when performing design according to EN 1999-1-1.
Moreover, the Effective Sections add-on in RSECTION allows you to calculate the effective cross-section according to EN 1999-1-1, taking into account the transverse weld.
Can I use Dlubal API in Rhino and Grasshopper?
How does single sign-on work with RFEM 6?
Is it possible to test the API II (gRPC) without incurring costs?
How can I set the alignment to the north and display the north arrow in the graphic?