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Evaluation of a real-time hybrid simulation system for performance evaluation of structures with rate dependent devices subjected to seismic loading

Evaluation of a real-time hybrid simulation system for performance evaluation of structures with rate dependent devices subjected to seismic loading
Evaluation of a real-time hybrid simulation system for performance evaluation of structures with rate dependent devices subjected to seismic loading
Real-time hybrid simulation is a viable experiment technique to evaluate the performance of structural systems subjected to earthquake loads. This paper presents details of the real-time hybrid simulation system developed at Lehigh University, including the hydraulic actuators, the IT control architecture, an integration algorithm and actuator delay compensation. An explicit integration algorithm provides a robust and accurate solution to the equations of motion while an adaptive inverse compensation method ensures the accurate application of the command displacements to experimental substructure(s) by servo-hydraulic actuators. Experiments of a steel moment resisting frame with magneto-rheological fluid dampers in passive-on mode were conducted using the real-time hybrid simulation system to evaluate the ability for the simulation method to evaluate the nonlinear seismic response of steel frame systems with dampers that are intended to enhance the response of the structure. The comparison with numerical simulation results demonstrates that the real-time hybrid simulation system produces accurate and reliable experimental results and therefore shows great potential for structural performance evaluation in earthquake engineering research.Highlights? The large-scale real-time hybrid simulation system at Lehigh University is presented. ? The system is validated by large-scale real-time hybrid simulations of steel MRFs with MR dampers. ? Good agreement is observed between experimental results and numerical simulations. ? The system enables seismic performance evaluation of structural systems to be studied.
0141-0296
71-82
Chen, C.
4cead8c1-828d-411c-a2e0-fb7d08603dc4
Ricles, J.M.
04ac4367-e263-4a40-b4c4-5ad106b1a77a
Karavasilis, T.L.
15850eb0-6af4-4b6e-bab4-d5bde281b769
Chae, Y.
50cb8231-9f63-41d2-8cc8-1558da5688f7
Sause, R.
ac7be883-f8d1-43e2-b8bd-dce430a4d3c3
Chen, C.
4cead8c1-828d-411c-a2e0-fb7d08603dc4
Ricles, J.M.
04ac4367-e263-4a40-b4c4-5ad106b1a77a
Karavasilis, T.L.
15850eb0-6af4-4b6e-bab4-d5bde281b769
Chae, Y.
50cb8231-9f63-41d2-8cc8-1558da5688f7
Sause, R.
ac7be883-f8d1-43e2-b8bd-dce430a4d3c3

Chen, C., Ricles, J.M., Karavasilis, T.L., Chae, Y. and Sause, R. (2012) Evaluation of a real-time hybrid simulation system for performance evaluation of structures with rate dependent devices subjected to seismic loading. Engineering Structures, 35, 71-82. (doi:10.1016/j.engstruct.2011.10.006).

Record type: Article

Abstract

Real-time hybrid simulation is a viable experiment technique to evaluate the performance of structural systems subjected to earthquake loads. This paper presents details of the real-time hybrid simulation system developed at Lehigh University, including the hydraulic actuators, the IT control architecture, an integration algorithm and actuator delay compensation. An explicit integration algorithm provides a robust and accurate solution to the equations of motion while an adaptive inverse compensation method ensures the accurate application of the command displacements to experimental substructure(s) by servo-hydraulic actuators. Experiments of a steel moment resisting frame with magneto-rheological fluid dampers in passive-on mode were conducted using the real-time hybrid simulation system to evaluate the ability for the simulation method to evaluate the nonlinear seismic response of steel frame systems with dampers that are intended to enhance the response of the structure. The comparison with numerical simulation results demonstrates that the real-time hybrid simulation system produces accurate and reliable experimental results and therefore shows great potential for structural performance evaluation in earthquake engineering research.Highlights? The large-scale real-time hybrid simulation system at Lehigh University is presented. ? The system is validated by large-scale real-time hybrid simulations of steel MRFs with MR dampers. ? Good agreement is observed between experimental results and numerical simulations. ? The system enables seismic performance evaluation of structural systems to be studied.

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More information

Accepted/In Press date: 3 October 2011
e-pub ahead of print date: 7 January 2012
Published date: February 2012
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 401616
URI: https://eprints.soton.ac.uk/id/eprint/401616
ISSN: 0141-0296
PURE UUID: bd3c12bf-a6e6-49dc-bfd7-c601757706e0
ORCID for T.L. Karavasilis: ORCID iD orcid.org/0000-0003-2553-5389

Catalogue record

Date deposited: 19 Oct 2016 15:54
Last modified: 15 Jul 2019 20:00

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