Experimental investigation on dynamic properties of particle damping under electromagnetic field
HU Li1，TU Di1，YANG Qiliang1，XU Xian2
1.School of Automobile and Traffic Engineering,Wuhan University of Science and Technology, Wuhan 430081, China;
2.Research Center, Dongfeng Commercial Vehicle Co., Ltd., Wuhan 430056, China
Abstract：The steady state power technique was used to investigate the damping properties of particle damper which was under the effect of electromagnetic field in experiments. It was observed that the electromagnetic field could change the particle damper’s capability of energy dissipation. Under low vibration acceleration (less than 32.5 m/s2), the loss power and the loss factor decrease with current intensity increases. When the acceleration reaches a higher level, the loss power and the loss factor increase as current intensity increases. When the acceleration amplitude increases, effective mass decreases and current intensity hardly has influence on effective mass.
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