Fabrication and experiment of a hydro-pneumatic semi-active resettable device

A. Keyhani, S. M. Sajjadi Alehashem, Yiqing Ni

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


A new innovative Hydro-pneumatic Semi-active Resettable Device by using MR-Fluid (MR-HSRD) is introduced for vibration suppression of structures. The novel device consists of a cylinder-piston system with control valve and magneto-rheological valve (MR-valve) mounted on a bypass pipe connecting two sides of the cylinder. The MR-HSRD is set by changing the stiffness and the damping of the device independently. Moreover, the hysteresis behavior can be adjusted by using different control logics for control valve. A mathematical model is presented for behavior of the device. The experimental results of MR-HSRD under cyclic and static loadings are presented and are compared with the mathematical models.
Original languageEnglish
Pages (from-to)47-70
Number of pages24
JournalAsian Journal of Civil Engineering
Issue number1
Publication statusPublished - 1 Feb 2013


  • Hydro-pneumatic actuator
  • MR-fluid
  • MR-valve
  • Resettable device
  • Semi-active control
  • Variable stiffness

ASJC Scopus subject areas

  • Civil and Structural Engineering

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