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bounda_sine index start_time freq_0 amp_0 freq_1 amp_1 ...

The bounda_unknown or bounda_force record with the same index is imposed with the sum of the sine functions; the first sine function has frequency freq_0 and amplitude amp_0, the second sine function has frequency freq_1 and amplitude amp_1, etc.. The sine functions starts at time 0. More general behavior in time can be imposed by using bounda_time records. For a specific index only one of bounda_time and bounda_sine can be specified.

As a typical application the response due to the excitation with a frequency spectrum can be analyzed. Just print the relevant response by control_print_history and extract the frequency spectrum of that response signal.

The sine loads will be only imposed after start_time.

tochnog 2001-09-02