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Shear performance of novel disk-type porous foam metal magneto-rheological (MR) fluid actuator

X. H. LIU1,2,*

Affiliation

  1. School of Mechanical and Automation Engineering, Shanghai institute of Technology, China
  2. School of Mechatronics and Automation Engineering, Shanghai University, China

Abstract

The paper presents a new disk-type porous foam metal magneto-rheological fluid actuator and investigates the shear performance experimentally. The actuator has the following characteristics, MR fluid is stored in porous foam metal, in action of magnetic field, MR fluid will be extracted out from the porous foam metal and fill up the shearing gap, and produce the MR effect. The influence of the materials with different relative permeability, the current, the shear rate and the gap on the shear performance are investigated and analyzed experimentally. The experimental results show the volume of MR fluid extracted from porous foam metals is one of the critical factors for the shear torque of the actuator. Last, to validate the effect of volume on the shear torque, the experiment is studied by adding the different volume of MR fluid on the gap.

Keywords

Shear performance, MR fluid, Disk-type magneto-rheological fluid actuators, Porous foam metal.

Citation

X. H. LIU, Shear performance of novel disk-type porous foam metal magneto-rheological (MR) fluid actuator, Optoelectronics and Advanced Materials - Rapid Communications, 4, 9, September 2010, pp.1346-1349 (2010).

Submitted at: Aug. 2, 2010

Accepted at: Sept. 15, 2010