Cylindrical Magnetorheological Fluid Variable Transmission Controlled by Shape-Memory Alloy | Zendy

Song Chen | Zendy; Kailin Jian | Zendy; Xianghe Peng | Zendy

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Cylindrical Magnetorheological Fluid Variable Transmission Controlled by Shape-Memory Alloy

Author(s) -

Song Chen,

Kailin Jian,

Xianghe Peng

Publication year - 2012

Publication title -

science and technology of nuclear installations

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.417

H-Index - 24

eISSN - 1687-6083

pISSN - 1687-6075

DOI - 10.1155/2012/856082

Subject(s) - magnetorheological fluid , viscoplasticity , shape memory alloy , torque , magnetic field , mechanics , materials science , sma* , flow (mathematics) , mechanical engineering , structural engineering , engineering , physics , computer science , finite element method , composite material , constitutive equation , algorithm , quantum mechanics , thermodynamics

Centrifugal fan is an important component of a ventilation system in a nuclear power plant. In this paper, we proposed a magnetorheological speed-adjustment system controlled by shape-memory alloy for centrifugal fan. A theoretical analysis of the effect of the applied magnetic field on the viscoplastic flow between two cylinders in the speed-adjustment system is presented. The expressions for the velocity in viscoplastic flow and the torque transmitted by MR fluids are derived. A sliding mode SMA switch is proposed to modify the magnetic field acting on working gap under thermal effect. The results indicate that with the increases of applied magnetic field, the torque transmitted by MR fluid goes up rapidly

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