Performance of Magnetorheological Fluids Flowing Through Metal Foams
If magnetorheological (MR) fluids are stored in porous materials, when excited by the external magnetic field, MR fluid will be drawn out and produce MR effect, which could be used to solve the following problems of the MR damper, such as the seal, volume and the cost of MR fluid damper. In this paper, the effect of structure of metal foams on the performance of MR fluid is investigated; the relationship between the penetrability and the porosity of the metal foams is measured, the change of MR fluid performance flowing though the metal foams is obtained. It shows that, after flowing through metal foams, the change of performance of MR fluid is about 2.5%. Compared to the sponge, the porous metal foams have the obvious advantages in high porosity and rigidity, which provide a convenient and low-cost way to design the MR damper.
Carlson, J.D. (2001). Sponge wrings cost from MR fluid devices. Machine Design, 22 (2), 73-76.
Guldbakke, J.M., Hesselbach, J. (2006). Development of bearings and a damper based on magnetically controllable fluids. Journal of Physics: Condensed Matter, 18, S2959-S2972.
Carlson, J.D., Jolly, M.R. (2000). MR fluid, foam and elastomer devices. Mechatronics, 10, 555-569.
Kuzhir, P., Bossis, G. (2003). Flow of MR fluid through porous media. European Journal of Mechanics, 22, 331-343.
Bashtovoia, V., Bossis, G. (2005). Magnetic field effect on capillary rise of magnetic fluids. Journal of Magnetism and Magnetic Materials, 289, 376-378.
Harte, A.M., Fleck, N.A., Ashby, M.F. (2001). The fatigue strength of sandwich beam with an aluminum alloy foam core. International Journal of Fatigue, 23, 499-507.
Banhart, J. (2001). Manufacture, characterization and application of cellular metals and metal foams. Progress in Material Science, 46, 6-17.
Liu, X.H., Wong, P.L., Wang, W., Bullough, W.A. (2010). Feasibility study on storage of MR Fluid using metal foams. Journal of Intelligent Material Systems and Structures, 21, 1193-1200.
Liu, X.H. (2010). Shear performance of novel disk-type porous foam metal magneto-rheological (MR) fluid actuator. Optoelectronics and Advanced Materials - Rapid Communications, 9, 1346-1349.
LORD Corporation. Hydrocarbon-Based MR Fluid MRF-132AD. Retrieved from http://www.lord.com
Taylor, D.W. (1948). Fundamentals of Soil Mechanics. New York: John Wiley & Sons.
Herrmann, H.J., Andrade Jr., J.S., Araújo, A.D. (2007). Particles in fluids. Computer Physics Communications, 177, 158-161.
Belforte, G., Raparelli, T., Viktorov, V., Trivella, A. (2007). Permeability and inertial coefficients of porous media for air bearing feeding systems. Journal of Tribology, 129, 705-711.
Chen, Y., Shi, M. (2000). Determination of permeability for porous media using fractal theory[J]. Journal of Tsinghua University, 40, 94-99.
