Analysis and Testing of MR Shear Transmission Driven by SMA Spring

A transmission method of magnetorheological (MR) fluid in cylindrical-type driven by shape memory alloy (SMA) spring with the thermal effect was proposed. The torque can change rapidly with temperature. Based on the thermal effect of SMA, the expression for displacement of SMA spring was established...

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Bibliographic Details
Published in:Advances in materials science and engineering 2013-01, Vol.2013 (2013), p.1-6
Main Authors: Huang, Jin, Zhong, Lirong, Chen, Xu
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Design
Displacement
Flow velocity
Fluids
Magnetic fields
Magnetism
Magnetorheological fluids
Mathematical models
Phase transitions
Shape memory alloys
Shear strain
Shear stress
Springs
Studies
Temperature
Torque
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Summary:A transmission method of magnetorheological (MR) fluid in cylindrical-type driven by shape memory alloy (SMA) spring with the thermal effect was proposed. The torque can change rapidly with temperature. Based on the thermal effect of SMA, the expression for displacement of SMA spring was established. The rheological property of MR fluid under the magnetic fields was described by Bingham model. Based on momentum equation, the shear flow of MR fluid between two cylinders was analyzed and the expressions of flow velocity and torque have been obtained. The experimental results show the output displacement of SMA spring and the transmit torque of MR fluid is directly proportional to the temperature and the applied magnetic field, respectively.
ISSN:1687-8434
1687-8442
DOI:10.1155/2013/307207