ACCURACY OF DISPLACEMENT, VELOCITY, AND ACCELERATION OF REAL-TIME HYBRID SIMULATION

Abstract

 When evaluating the seismic performance of large-scale structures, real-time hybrid simulation (RTHS), which couples the experiment part and analysis part, is an effective testing method. Considering application RTHS to large-scale structures, analytical model becomes complicated and calculation task increases. It may affect the testing accuracy because the actuator displacement deviates the ideal response. This study aims to examine the effect of the large calculation task on the RTHS accuracy. The result shows that the accuracy of velocity and acceleration in the experimental part may decreases as the calculation task in analysis part increases. This trend is remarkable when the response velocity level in experiment part becomes larger. This may suggest that it is necessary to take care the velocity level for evaluating large-scale structures in RTHS.