Page 54 - Dynamic Loading and Design of Structures
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Figure 2.6 DLF for load with duration time td.
Figure 2.7 DLF for load with rise time tr.
(2.21)
and Figure 2.7 plots two cases, one with a rapid (t =0.2T) and the other with a slow (t =3.33T)
r
r
application. We note that the latter case produces a quasi-static response in the SDOF
oscillator. Finally, in Figure 2.8 we have the maximum value of the DLFmax as function of the
time ratio t /T.
r
