Smart Structures and Systems

  • 제28권1호
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  • Pages.105-119
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  • 2021
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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Advancing real-time hybrid simulation for coupled nonlinear soil-isolator-structure system

  • Li, Hongwei (Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University) ;
  • Maghareh, Amin (School of Mechanical Engineering, Purdue University) ;
  • Uribe, Johnny W.C. (Lyles School of Civil Engineering, Purdue University) ;
  • Montoya, Herta (Lyles School of Civil Engineering, Purdue University) ;
  • Dyke, Shirley J. (School of Mechanical Engineering, Purdue University) ;
  • Xu, Zhaodong (Key Laboratory of C&PC Structures of the Ministry of Education, Southeast University)
  • 투고 : 2020.08.02
  • 심사 : 2021.03.20
  • 발행 : 2021.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

Experiments involving soil-structure interaction are often constrained by the capacity and other limitations of the shake table. Additionally, it is usually necessary to consider different types of soil in experiments. Real-time hybrid simulation (RTHS) offers an alternative method to conduct such tests. RTHS is a cyber-physical testing technique that splits the dynamic system under investigation into numerical and physical components, and then realistically couples those components in a single test. A limited number of previous studies involving soil-structure interaction have been conducted using RTHS, with a focus on linear models and systems. The presence of isolators was not considered in these studies to the authors' best knowledge. Herein, we aim to advance the understanding of the RTHS method by developing and demonstrating its use for nonlinear soil-isolator-structure systems. A sliding mode controller able to deal with both system nonlinearities and wide range of potential uncertainties in such tests is designed and validated using a nonlinear shake table with a nonlinear specimen. By simply changing the numerical model and using the same controller and experimental setup, different soil types and ground motions can readily be considered with this approach. Numerical and RTHS results are compared for verification purposes.

키워드

과제정보

The authors express their appreciation for the support from the program of China Scholarships Council (No. 201706090092), the Priority Academic Program of Jiangsu Higher Education Institutions (CE02-1-48), the Fundamental Research Funds for the Central University - Postgraduate Research\&Practice Innovation Program of Jiangsu Province (KYCX170126), Distinguished Young Scholars (Grant Number: 51625803), Changjiang Scholars Program of Ministry of Education of China, Distinguished Professor Program of Jiangsu Province, Peruvian National Council of Science Technology and Technological Innovation (CONCYTEC) Fellowship, the US National Science Foundation (Award No. CMMI-1661621) and Purdue University's System Collaboratory Fellows Program.

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