| Abstract: | An analysis of the influence of strong motion duration on the response spectra is presented. The analysis is based on the concept of evolutionary power spectral density and first passage estimations for non-stationary random vibrations. To compare the response for different durations the criteria of constant Arias intensity and constant excitation level have been applied. The paper presents a numerical analysis of the effect of strong motion duration on various response statistics for a linear oscillator. Results indicate a decrease of peak response and first passage probability with increasing strong motion duration for constant Arias intensity. |
