Date of Award
Master of Science in Engineering
Civil and Construction Engineering
Dr. Xiaoyun Shao
Dr. Upul Attanayake
Dr. Haluk Aktan
Real-time, hybrid simulation, model updating, UKF, Bouc-Wen
Masters Thesis-Open Access
Hybrid simulations have shown great potential for economic and reliable assessment of structural seismic performance through a combination of physically tested components, called the experimental substructure, and numerically simulated components, called the numerical substructure. Current hybrid simulation practices often use a fixed numerical model without considering the possible availability of a more accurate model obtained during hybrid simulation through an online model updating technique. To address this limitation and improve the reliability of numerical models in hybrid simulations, this study describes the implementation of an online model updating method in real-time hybrid simulation (RTHS). The Unscented Kalman Filter (UKF) was selected as the model updating algorithm and applied to identify Bouc-Wen model parameters that define the hysteresis of the experimental substructure, and the identified parameters were therefore applied to the numerical substructures during the hybrid simulation. Firstly, a parametric study of the UKF system model parameters was carried out. Then the developed online model updating method was experimentally validated through RTHS. Finally, guidelines for implementing the UKF for online model updating in future RTHS are provided.
Mueller, Adam, "Real-Time Hybrid Simulation with Online Model Updating" (2014). Master's Theses. 506.