抄録
In this report, a method to estimate a non-linearity or a hysteretic characteristics in the vibration response of a structure, whose yield point is not specific and stiffness gradually decreases according to the increase of deformation, is examined. So, firstly, the vibration responses of single-degree-of-freedom system with various characteristics of restoring force are calculated. Secondly, the wavelet coefficients of the absolute accelerations are calculated with wavelet analysis. As the result, the average of the absolute value of the wavelet coefficients of level 1 of the absolute acceleration is found to tend to increase in accordance with the strengthening of the effect of hysteretic damping.
