HYSTERESIS CHARACTERISTICS AND MODELING OF FRICTION DAMPER WITH VARIABLE RESISTANCES

Abstract

In order to investigate and clarify the characteristics of the friction damper with variable resistances, a total of four dynamic loading tests were conducted. The primary factors that influence the hysterestic properties of the damper were analyzed. The experimental results have indicated that the damper can apply two levels of friction resistance stably. The mechanism for the variance in the stiffness observed while the friction resistance of the damper was shifting from the lower level to the higher one was also discussed. Based on the results of experiments and discussion, an analytical cyclical model which can simulate the test results exactly was proposed.