Page 46 - Dynamic Loading and Design of Structures
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Figure 2.1 (a) SDOF modelling of a single story frame for (b) horizontal, (c) vertical and (d) rotational
oscillations.
Figure 2.2 Various types of dynamic loads: harmonic, aperiodic, earthquake and long duration.
rotational, as shown in Figure 2.1(b)-(d). As expected, the SDOF oscillator is used extensively
for modelling structural systems, but it should be remembered that it is an approximate model
for anything else but the simple frame previously mentioned. Next, some typical dynamic
loads are shown in Figure 2.2, where we distinguish between periodic (both harmonic and
non-harmonic) and aperiodic (both short and long duration) loads.
