A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency

<div>ADR spectra with different values of <i>c</i><sub><i>a</i></sub> (kN·s/m) for the El Centro ground motion (<i>α</i> = 0.50).</div>

Advances in Civil Engineering

Figure 11: A New Method to Calculate Additional Damping Ratio considering the Effect of Excitation Frequency 