How do I choose the correct time step for the integration?
The correct time step depends on the natural frequency of the system or the frequency of the exciting forces.
To achieve a sufficient precision, the governing period T = 1/f is divided in about 10 steps; that is, the time step Delta t is to be such that Delta t < t/10="1/(10f)" =="" 2="" pi="" (10="" omega).="">
Furthermore, you can specify in this definition point whether the results of each time step are to be shown or, for example, only for each fifth time step.
Dynamic and seismic analysis including time history analysis and multi-modal response spectrum analysis