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A New Isolator for Vibration Control

机译：新型振动控制隔离器

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摘要

This study presents the feasibility of a new variable stiffness and damping isolator (VSDI) in an integrated vibratory system. The integrated system comprised of two VSDIs, a connecting plate and a mass. The proposed VSDI consists of a traditional steel-rubber vibration absorber, as the passive element, and a magneto-rheological elastomer (MRE), with a controllable (or variable) stiffness and damping, as the semi-active element. MREs' stiffness and damping properties can be altered by a magnetic field. Dynamic testing on this integrated system has been performed to investigate the effectiveness of the VSDIs for vibration control. Experimental results show significant shift in natural frequency, when activating the VSDIs. Transmissibility and natural frequency of the integrated system are obtained from properties of single device. The experimental and predicted results show good agreement between the values of the natural frequency of the system at both off and on states. However, system damping predictions are different from experimental results. This might be due to unforeseen effects of pre-stressed MREs and nonlinear material properties.
机译：这项研究提出了在集成振动系统中使用新型可变刚度和阻尼隔离器（VSDI）的可行性。集成系统由两个VSDI，一个连接板和一个质量块组成。拟议的VSDI由传统的钢-橡胶减震器作为被动元件，以及具有可控（或可变）刚度和阻尼的磁流变弹性体（MRE）作为半主动元件。 MRE的刚度和阻尼特性可以通过磁场改变。已经对该集成系统进行了动态测试，以研究VSDI在振动控制方面的有效性。实验结果表明，激活VSDI时，固有频率发生了显着变化。集成系统的透射率和固有频率是从单个设备的属性获得的。实验和预测结果表明，系统在关闭和打开状态下的固有频率值之间都具有良好的一致性。但是，系统阻尼的预测与实验结果不同。这可能是由于预应力MRE和非线性材料特性的不可预见的影响。

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