Comparison of explicit integration algorithms for real-time hybrid simulation

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• 作者：Fei Zhu ; Jin-Ting Wang ; Feng Jin ; Yao Gui
• 关键词：Real ; time hybrid simulation ; Integration algorithm ; Delay ; dependent stability and accuracy ; Delay compensation ; Discrete ; time root locus
• 刊名：Bulletin of Earthquake Engineering
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：14
• 期：1
• 页码：89-114
• 全文大小：2,147 KB
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• 作者单位：Fei Zhu (1)
  Jin-Ting Wang (1)
  Feng Jin (1)
  Yao Gui (2)
  
  1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, 100084, China
  2. Changjiang Institute of Survey, Planning, Design and Research, Wuhan, 430010, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geotechnical Engineering
  Civil Engineering
  Geophysics and Geodesy
  Hydrogeology
  Structural Geology
  
• 出版者：Springer Netherlands
• ISSN：1573-1456

文摘

Real-time hybrid simulation (RTHS) combines physical experimentation with numerical simulation to evaluate dynamic responses of structures. The inherent characteristics of integration algorithms change when simulating numerical substructures owing to the response delay of loading systems in physical substructures. This study comprehensively investigates the effects of integration algorithms on the delay-dependent stability and accuracy of multiple degrees-of-freedom RTHS systems. Seven explicit integration algorithms are considered; and the discrete-time root locus technique is adopted. It is found that the stability of RTHS system is mainly determined by the time delay rather than the integration algorithms, whereas its accuracy mainly depends on the accuracy characteristic of the applied integration algorithm itself. An unconditionally stable integration algorithm cannot always guarantee good stability performance; and the inherent accuracy or numerical energy dissipation of integration algorithms should be taken into account in RTHSs. These theoretical findings are well verified by RTHSs. Keywords Real-time hybrid simulation Integration algorithm Delay-dependent stability and accuracy Delay compensation Discrete-time root locus