Parametric variation of a coupled pendulum-oscillator system using real-time dynamic substructuring

Research output: Contribution to journalArticle (Academic Journal)peer-review

31 Citations (Scopus)

Abstract

In this paper, we present results from real-time dynamic substructuring tests used to model the dynamics of a coupled pendulum-oscillator system. The substructuring technique is particularly suitable for systems where the nonlinear and linear parts of the system can be separated. The nonlinear part is built full size and tested physically (the substructure) while the linear part is simulated numerically. Then, in order to replicate the dynamics of the complete system the substructure and the numerical model must be coupled in real time. In this study, we demonstrate how real-time dynamic substructure testing can be used to model systems with strongly nonlinear behaviour using parametric variation. We show that the substructuring results give good qualitative and quantitative agreement with purely numerical simulations of the complete system for a range of parameters values. This includes single parameter bifurcation diagrams, some of which cannot be obtained from a full physical experiment. We also briefly discuss the effects of delay and noise on the stability of the substructured system, and how these effects can be mitigated.
Translated title of the contributionParametric variation of a coupled pendulum-oscillator system using real-time dynamic substructuring
Original languageEnglish
Pages (from-to)991 - 1012
Number of pages21
JournalStructural Control and Health Monitoring
Volume14(7)
DOIs
Publication statusPublished - Nov 2007

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