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This operator makes it possible to generate artificial seismic accelerograms for transient dynamic calculations. It makes it possible to generate two types of signals:

1. Non-stationary seismic signals according to the scalable Kanai-Tajimi power spectral density model (DSP) (), option DSP;

2. Seismic signals compatible with a target oscillator response spectrum (SRO), option SPEC_MEDIAN, SPEC_MOYENNE, SPEC_UNIQUE, or SPEC_FRACTILE.

In both cases, a modulation function must be associated with it, which determines the temporal evolution of the seismic signals by the keyword factor MODULATION. If you do not want to apply temporal modulation, you must choose a « constant » modulation over the time interval. You should consult the [R4.05.05] documentation for a detailed description of the models and parameters to be filled in.

Produces a table_function concept.