Development of Hybrid Simulation Framework (UT-SIM) and its Applications to Structures Subjected to Earthquake Load
Professor Oh-Sung Kwon
Department of Civil and Mineral Engineering, University of Toronto, Canada
Monday, April 15, 2019 (12:30 pm)
General Assembly Room, Department of Civil Engineering, University of Patras
Abstract
The concept of hybrid (experimental-numerical) simulation method was first proposed in 1969 by Hakuno et al. Since then, the hybrid simulation method has been continuously evolved. One
of the main strengths of the hybrid simulation is that critical element(s) in a structural system can
be tested in a laboratory while the rest of the system can be numerically simulated. In addition,
the method can be also used to analyze a large and complex system such as soil-structure
interaction problem by substructuring the system to smaller problems that can be solved with
dedicated analysis tools for each problem domain. To facilitate the development and application
of hybrid (experimental-numerical) or multi-platform (numerical-numerical) simulation method,
the University of Toronto has developed a generalized simulation framework, UT-SIM (www.utsim.
ca). The framework allows integration of various experimental specimens with various
numerical analysis tools. The presentation will first introduce the simulation framework for
component-level substructuring and system-level substructuring which is followed by
applications of the framework to various structural systems subjected to earthquake load such as
self-centering energy-dissipative brace system, buckling restrained braced (BRB) frame, special
concentric braced frame, and soil-tunnel interaction problem. The presentation will also briefly
introduce application of the framework to simulate a steel structure subjected to fire load.
Biography
Professor Kwon holds B.Sc. and MSc degrees from Hanyang University, Korea, as well as MSc and PhD degrees from the University of Illinois, Urbana-Champaign. Professor Kwon is advancing hybrid simulation
techniques that combine numerical models and experimental specimens using computer technology
to determine how buildings will respond to seismic activity. The programming of the computational -
control platform used to conduct experiments, which allows engineers to manipulate code, was developed
in-house.
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