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Design For Practice |
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Northern Arizona University |
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Magnetic Shunt Damping |
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A final area of research is the use of magnetic fields to reduce vibrations. As the gap between an electromagnet and a permanent magnet decreases, the dampening effect increases. The constraining factor in the implementation of the electromagnetic shunt dampener is the amplitude of the structure where damping is required. The layout can be seen below.
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Niu, Hongpan, et al. “A New Electromagnetic Shunt Damping Treatment and Vibration Control of Beam Structures.” Smart Materials and Structures 18.4 (2009): 1-15. Compendex. Web. 5 Dec. 2009. |
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One of the greatest aspects of the shunt dampening technology is that the system is simple and requires no adaptive algorithms or substantial added equipment. The electromagnetic shunt dampening system is also more feasible in terms of cost and results; the cost effectiveness of the vibration damping proves to be very high. However, its application is limited to one axis per set up. And constraining three different axis for different locations would be inadequate and the total cost of additional members needed for implementation would be problematic. |
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Configuration of the electromagnetic shunt dampening system (a) and closed system (b) (Niu, Hongpan ) |