A Method of Separating the Background and Resonant Components of Wind Dynamic Effects in Time Domain

To further interpret the dynamic results in time domain,a method of separating the background and resonant components in time domain is proposed. Based on the theory of dynamic calculation in frequency and time domains,the proposed method is examined through a SDOF oscillator and a MDOF cantilever beam under dynamic wind actions,and the results are also compared with those from the calculation in frequency domain. According to the theoretical analysis and example illustration,it is proved that with clear concept and simple application,the new method can separate the resonant component from the total dynamic responses precisely for MDOF structures. Moreover,the coupling component between the background and resonant components is also studied.