A simple strategy for dynamic substructuring: I. Concept and development

Summary Dynamic substructuring refers to physical testing with computational models in the loop. This paper presents a new strategy for such testing. The key feature of this strategy is that it decouples the substructuring controller from the physical subsystem. Unlike conventional approaches, it do...

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Bibliographic Details
Published in:Earthquake engineering & structural dynamics 2018-07, Vol.47 (9), p.1801-1822
Main Authors: Stefanaki, Aikaterini, Sivaselvan, M. V.
Format: Article
Language:English
Subjects:
active mass driver
Computer applications
Configuration management
Control systems design
Design
dynamic substructuring
Dynamics
feedforward
hybrid simulation
Mass drivers
Mathematical models
shake table
Shake tables
soil‐foundation‐structure interaction
Strategy
Substructures
Tables
Testing
Tracking control
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Summary:Summary Dynamic substructuring refers to physical testing with computational models in the loop. This paper presents a new strategy for such testing. The key feature of this strategy is that it decouples the substructuring controller from the physical subsystem. Unlike conventional approaches, it does not explicitly include a tracking controller. Consequently, the design and implementation of the substructuring controls are greatly simplified. This paper motivates the strategy and discusses the main concept along with details of the substructuring control design. The focus is on configurations that use shake tables and active mass drivers. An extensive experimental assessment of the new strategy is presented in a companion paper, where the influence of various factors such as virtual subsystem dynamics, control gains, and nonlinearities is investigated, and it is shown that robustly stable and accurate substructuring is achieved.
ISSN:0098-8847
1096-9845
DOI:10.1002/eqe.3039