Graduate Thesis Or Dissertation
 

Fluid Structure Interaction for Cascading Seismic and Tsunami Events using Real-Time Hybrid Simulation

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/hx11xp657

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  • While real-time hybrid simulation has been utilized for structures subjected to seismic events for decades, its use in fluid-structure interaction problems is still a novel endeavor. Gathering data for cascading seismic and tsunami events is difficult due to space constraints in existing experimental facilities, complications regarding the application of scaling laws for both the fluid and structure, and limitations of computational software in simulating multiple hazards within the same analysis. To alleviate these constraints, this study demonstrates the feasibility of a real-time hybrid simulation testing method to enhance fluid-structure interaction simulations. A cylindrical bridge pier specimen and three-dimensional numerical bridge model were subjected to cascading seismic and tsunami events within a three-tier real-time hybrid simulation architecture. The domain was partitioned such that the wave-structure interaction was physically simulated and coupled to a numerical model of the remaining bridge. To simulate existing damage, seismic loading was applied in the structural model prior to the wave loading. Textbook short pulse response was exhibited by the specimen, and the results illustrate that a real-time hybrid simulation approach is both feasible and economical for future investigations using this method.
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  • I would like to extend my sincerest gratitude and appreciation to PacTrans for providing funding for this research. Any opinions, findings, and conclusions or recommendations expressed in this paper are those of the author and do not necessarily reflect the views of any participants in the research program.
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