Modeling and Testing for Small-Scale Time Delay Device Based on Magnetorheological Fluid

Abstract:

Because of magnetorheological (MR) dampers’ mechanical simplicity, high dynamic range, low power requirements, large force capacity and robustness, they are the most promising devices for structural vibration control. But this paper uses MR dampers’ damp characteristics to complete a function of short time delay, and the damper’s volume is smaller than the other dampers that have been applied for commercial uses. This paper discusses two types of structures for time delay, gap structure time delay device and holes structure time delay device. In order to estimate the two kinds of devices’ delay time, mathematical modeling and experimental testing are built in this paper. From the test results, we know that holes structure does not always implement theoretical delay time, but the gap structure can complete the time delay function satisfactory. For judging whether the time delay device can work normally under different circumstance, the time delay device with gap structure is tested in a change temperature field from -40 °C to 55 °C.

• Periodical: Advanced Materials Research (Volumes 79-82)
• Pages: 1273-1276
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.79-82.1273
• Online since: August 2009
• Authors: Li Sui, Geng Chen Shi, Kun An, Bao Jian Wei
• Keywords: Mathematical Models, MR Fluid, Temperature Test, Testing, Time Delay

References

[1] A.G. Olabi and A. Grunwald: Materials & Design, Vol. 28 (2007) No. 10, pp.2658-2664.

[2] J.G. Ji and H.L. Huo: Friend of Science Amateurs, Vol. 29 (2008) No. 10, pp.23-24. (In Chinese).

[3] K. An: Study on Fuze Safety System Based on Magenetorheological (MR) Fluids (MS., Beijing Institute of Technology, China 2007), pp.1-9.

[4] James Poynor: Innovative Designs for Magneto-Rheological Dampers (MS., Virginia Polytechnic Institute and State University, USA 2007), pp.4-10.

[5] G. Yang, J.D. Carlson and M.K. Sain: Engineering Structures, Vol. 24(2002), pp.309-323.

[6] Q. Qi: Damping Characteristics of Absorber Based on MR Fluid (MS., Civil Aviation University of China, China 2004), pp.31-33.

[7] Information on http. / www. tider. com. cn.