The following chapters describe the input parameters that affect the add-on response spectrum method.
Add-On ' Response Spectrum Method '
In the Add-Ons tab of the model basic data, you can activate or deactivate the response spectrum method for use (see image # extbookmark manual|image021889|' Add-Ons ' for Analysis and Design #). A green dot in front of the name of the add-on indicates that you have a license. An orange or blue point means that the add-on is only available as a demo or part of the trial version.
In the Norms I tab of the General Data, you can select the norm to be used for the dynamic analysis (see image # extbookmark manual|image026493|Register 'Standards I' #). The input dialogs of the dynamic analysis are automatically adapted to this standard.
After activating the add-on and the standard, the user interface is expanded to include new entries in the navigator, tables and dialogs (see image # extbookmark manual|image026549|Entries in Navigator # and Image # extbookmark manual|image026550|Entries in table #). The parameters of the response spectrum analysis are fully integrated into the user interface of the programs RFEM or RSTAB.
Input dialogs
Two input dialogs are decisive for the response spectrum method:
- In the Load Cases and Combinations dialog box, you specify which load cases are calculated according to the response spectrum method and assign the spectrum and the mode shape.
- In the Spectral Analysis Settings dialog box, you define the rules according to which the resulting forces and deformations are calculated.