Semiactive Control Using MR Dampers of a Frame Structure under Seismic Excitation

Gattulli, Vincenzo; Lepidi, Marco; Potenza, Francesco; Carneiro, Rubia

doi:10.1063/1.2963781

Title: Semiactive Control Using MR Dampers of a Frame Structure under Seismic Excitation

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Abstract

The paper approaches the multifaceted task of semiactively controlling the seismic response of a prototypal building model, through interstorey bracings embedding magnetorheological dampers. The control strategy is based on a synthetic discrete model, purposely formulated in a reduced space of significant dynamic variables, and consistently updated to match the modal properties identified from the experimental response of the modeled physical structure. The occurrence of a known eccentricity in the mass distribution, breaking the structural symmetry, is also considered. The dissipative action of two magnetorheological dampers is governed by a clipped-optimal control strategy. The dampers are positioned in order to deliver two eccentric and independent forces, acting on the first-storey displacements. This set-up allows the mitigation of the three-dimensional motion arising when monodirectional ground motion is imposed on the non-symmetric structure. Numerical investigations on the model response to natural accelerograms are presented. The effectiveness of the control strategy is discussed through synthetic performance indexes.

Authors:

Gattulli, Vincenzo; Lepidi, Marco; Potenza, Francesco ^[1]; Carneiro, Rubia ^[2]

DISAT, University of L'Aquila, Monteluco di Roio (Italy)
ENC, University of Brasilia (Brazil)

Publication Date:: Tue Jul 08 00:00:00 EDT 2008

OSTI Identifier:: 21148927

Resource Type:: Journal Article

Journal Name:: AIP Conference Proceedings

Additional Journal Information:: Journal Volume: 1020; Journal Issue: 1; Conference: 2008 seismic engineering conference: Commemorating the 1908 Messina and Reggio Calabria earthquake, Reggio Calabria (Italy), 8-11 Jul 2008; Other Information: DOI: 10.1063/1.2963781; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X

Country of Publication:: United States

Language:: English

Subject:: 58 GEOSCIENCES; BUILDINGS; COEFFICIENT OF PERFORMANCE; DAMPING; EXCITATION; GROUND MOTION; MASS DISTRIBUTION; OPTIMAL CONTROL; SEISMOLOGY

Citation Formats


                    Gattulli, Vincenzo, Lepidi, Marco, Potenza, Francesco, and Carneiro, Rubia. Semiactive Control Using MR Dampers of a Frame Structure under Seismic Excitation.  United States: N. p., 2008. 
        Web.  doi:10.1063/1.2963781.

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                    Gattulli, Vincenzo, Lepidi, Marco, Potenza, Francesco, & Carneiro, Rubia. Semiactive Control Using MR Dampers of a Frame Structure under Seismic Excitation.  United States.  https://doi.org/10.1063/1.2963781

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                    Gattulli, Vincenzo, Lepidi, Marco, Potenza, Francesco, and Carneiro, Rubia. 2008.  
        "Semiactive Control Using MR Dampers of a Frame Structure under Seismic Excitation".  United States.  https://doi.org/10.1063/1.2963781.

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@article{osti_21148927,

  title        = {Semiactive Control Using MR Dampers of a Frame Structure under Seismic Excitation},

  author       = {Gattulli, Vincenzo and Lepidi, Marco and Potenza, Francesco and Carneiro, Rubia},

  abstractNote = {The paper approaches the multifaceted task of semiactively controlling the seismic response of a prototypal building model, through interstorey bracings embedding magnetorheological dampers. The control strategy is based on a synthetic discrete model, purposely formulated in a reduced space of significant dynamic variables, and consistently updated to match the modal properties identified from the experimental response of the modeled physical structure. The occurrence of a known eccentricity in the mass distribution, breaking the structural symmetry, is also considered. The dissipative action of two magnetorheological dampers is governed by a clipped-optimal control strategy. The dampers are positioned in order to deliver two eccentric and independent forces, acting on the first-storey displacements. This set-up allows the mitigation of the three-dimensional motion arising when monodirectional ground motion is imposed on the non-symmetric structure. Numerical investigations on the model response to natural accelerograms are presented. The effectiveness of the control strategy is discussed through synthetic performance indexes.},

  doi          = {10.1063/1.2963781},

  url          = {https://www.osti.gov/biblio/21148927},
  journal      = {AIP Conference Proceedings},

  issn         = {0094-243X},

  number       = 1,

  volume       = 1020,

  place        = {United States},

  year         = {Tue Jul 08 00:00:00 EDT 2008},

  month        = {Tue Jul 08 00:00:00 EDT 2008}

}

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