ER流体性能的仿真研究

应用迭代摄动法讨论了含有ER流体振动系统的非线性频谱，给出了带有ER流体阻尼器梁结构的计算结果，并应用数值积分方法，分析了带有ER流体阻尼器梁结构的多自由度振动系统在不同电场强度和激励频率作用下的位移响应情况。结果表明．系统的刚度和响应的变化可以通过外加电场强度来控制，随着电场强度的增加，响应幅值减小，结构刚度变大。

Simulation study of the properties of ER fluid

The nonlinear frequency spectrum by iterative perturbation method for the vibration system with ER damper is discussed and the numerical results of a beam structure with ER damper are given. The displacement simulation of the response of the vibration system with an ER damper has been (given) under different strength of the applied external electric field and under the excitation with (different) frequencies. The Newmark method is also used to perform the numerical integration with the same parameters as that of the SDOF system. A conclusion is reached that the stiffness and response of vibration system can be changed by the control of the electric field strength:with the increase of the strength of the electric field applied to the ER damper, the resonance amplitude decreases and the stiffness of the vibration system increases.