Modeling the oscillatory dynamic behaviour of electrorheological materials in shear
Modeling the oscillatory dynamic behaviour of electrorheological materials in shear
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DOI：
10.1088/0964-1726/1/4/002
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发表时间：
1992-12
影响因子：
4.1
通讯作者：
R. Ehrgott;S. Masri
中科院分区：
文献类型：
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作者：
R. Ehrgott;S. Masri
对含氟液体中硅铝酸盐电流变材料进行了实验研究，目的是建立所观察到的动态行为的数学模型。在1-45 Hz的频率范围内进行了电流变材料剪切振动行为的实验研究。数学模型的开发有三种方法：第一，一个全球性的等效线性系统的方法;第二，参数识别，其中的机械模型的开发;和第三，一个非参数的方法，它近似的实验测量的非线性恢复力。电流变材料行为的模型将极大地帮助设计人员更好地评估这些材料对特定应用的适用性。一个这样的实际应用的兴趣探讨是在振动控制领域。一个辅助质量阻尼器使用ER设备被发现是能够减少一个额外的30%的系统的稳态响应时，相比最佳的线性粘滞阻尼器。
Electrorheological (ER) materials consisting of alumino-silicate in fluorinated liquids are experimentally studied with the objective of developing mathematical models of the observed dynamic behaviour. Experiments investigating the oscillatory behaviour of ER materials in shear are carried out over a frequency range of 1-45 Hz. Mathematical models are developed by three approaches: first, a global equivalent linear system approach; second, a parametric identification in which a mechanical model is developed; and third, a non-parametric method which approximates the experimentally measured non-linear restoring force. Models of ER material behaviour would greatly aid designers to better evaluate the appropriateness of these materials for a specific application. One such practical application of interest explored is in the area of vibration control. An auxiliary mass damper using an ER device is found to be capable of reducing the steady-state response of a system by an additional 30% when compared to an optimal linear viscous damper.