COMPLETE RESPONSE OF AN SDOF SYSTEM WITH A MIXED DAMPING MODEL

摘要: The hysteretic damping model has been used for more than half a century. For many structures, mainly metallic ones, it gives a simple representation for forced, steady-state vibrations, usually showing a remarkable agreement with the experimental results.However, when dealing with free or transient vibrations, mathematical difficulties have been raised by several authors, concerning apparent non-causal behaviour of the model. In a series of recent papers, the authors have shown that such a model can be used without incurring in such noncausal behaviour and that this same model could show a very good agreement with experimental results also for free vibration. Moreover, the approach was shown to be applicable to the viscous damping model too. As a consequence, it becomes possible to study a mixed model with both hysteretic and viscous terms. The present paper encompasses the results of those previous papers and includes an example to illustrate the correlation between theoretical and experimental results.