Event-Driven Control System for Geographically Distributed Hybrid Simulation
Publication: Journal of Structural Engineering
Volume 132, Issue 1
Abstract
An event-driven distributed control system for conducting continuous seismic response simulations using geographically distributed hybrid models is presented. Hybrid models, comprising appropriately scaled experimental and numerical substructures in networked geographically distributed laboratories or computers, can be used to realistically and cost-effectively evaluate the performance of complex structures at large scales. The principal advantage of the proposed event-driven control system is its ability to mitigate the adverse effects of random completion times of communication, computation, actuation and measurement tasks during a hybrid simulation on the stability, accuracy and reliability of the simulation results. The efficiency of the proposed continuous extrapolation/interpolation hybrid simulation method is demonstrated by examining the earthquake response of a two-story shear building model that comprises two experimental substructures and a numerical integrator connected through the internet. An evaluation of results from these hybrid simulations suggests that distributed hybrid simulation conducted using the proposed procedure provides accurate and reliable results.
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Acknowledgments
Support of this work through an NSF Grant No. NSFCMS-0086621 made within the George E. Brown Jr. Network for Earthquake Engineering Simulation (NEES) Program of the National Science Foundation is gratefully acknowledged. The writers also acknowledge the assistance of University of California, Berkeley graduate student Mr. Andreas Schellenberg and EERC laboratory technicians Mr. Don Clyde and Mr. Wes Neighbor during experiment setup and hybrid testing. Any opinions, findings, and conclusions or recommendations expressed in this paper are those of the writers and do not necessarily reflect those of the National Science Foundation.
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© 2005 ASCE.
History
Received: Sep 20, 2004
Accepted: Mar 28, 2005
Published online: Jan 1, 2006
Published in print: Jan 2006
Notes
Note. Associate Editor: Satish Nagarajaiah
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