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Advanced Modelling and Hybrid Simulation Research Group

My research program has focused on the development and application of an advanced simulation method for the assessment of complex structural systems. The simulation method, which is based on the concept of hybrid (experiment analysis) simulation, can integrate experimental elements at geographically distributed testing facilities and various numerical elements that are modelled with specialized analysis tools. The integration of these physical and numerical elements results in a realistic response prediction of complex nonlinear structural systems subjected to various loads such as earthquake, fire, or wind. My research group has been developing a high-level framework and algorithms for the integrated simulation as well as a software package for integration of various numerical analysis tools. Details on the simulation framework can be found at the project website: www.ut-sim.ca

The research program on hybrid simulation method was initially focusing on the assessment of nonlinear structural systems subjected to strong ground motions. Since 2014, my research group has extended the simulation method to evaluate structures subjected to fire or wind loads. For structures subjected to fire load, accurate numerical modelling of structural element's behaviour subjected to high temperature is very difficult, for which the integration of experimental specimen with a numerical model of the rest of the system can greatly improve the accuracy of the system level assessment. In the process of the hybrid fire simulation method development, we overcame various challenges to make the method robust. For structures subjected to wind load, computational fluid-dynamics analysis for wind-structure interaction is very time consuming and often inaccurate. Thus, representation of the wind-structure interaction through experiment which is integrated with a numerical model of a structural system can improve the accuracy in the prediction of dynamic response of a structural system. My research group designed novel experimental apparatus by integrating linear motors, motor drives, real-time controllers, etc. all of which were very new in the research field. We developed two apparatus: one for high-rise building and another one for bridge deck. My research group is one of the first research groups in the world which explored the hybrid fire simulation and hybrid wind simulation. Further details on the reserach program can be found in the Research Page.




Contact

Professor Oh-Sung Kwon
os.kwon[at]utoronto.ca, 416-978-5908
35 St. George St.
Toronto, ON M5S 1A4