Study on identification of damping system based on motion state

Abstract

A correct identification for damping system is the foundation to select the dynamic analysis method. In this study, the differences between motion states in different damping systems are investigated initially. A theoretical identification method based on motion state is proposed with the spatial continuity of the motion, and the coordination of the motion state is used as the objective function. In addition, dynamic simulation results of a set of plates are compared to clarify the physical interpretation of the identification method. The method is applied to three practical examples with recognized damping system, including the motion of seismic isolation bearings, whiplash effect, semi-active controlling systems, and soil–structure interaction system. The analysis results verify that the proposed identification method is feasible in practical engineering.