Abstract: Based on the working principle and the simplified model of MR damper, a series of experimental study on the damper force, energy dissipation and the response time under different excitation amplitude, frequency and control current is performed. The results indicate that the MR damper has a high effectiveness for energy dissipation, and the energy dissipation increases with the increasing of the excitation amplitude, frequency and control current. The response time of the MR damper does not change obviously with the control current changing, but decreases rapidly with the increase of vibration speed.

Key words: vibration and wave, MR damper, energy dissipation, response time, remnant magnetism

摘要： 结合磁流变阻尼器的工作原理和阻尼力简化模型，对不同激励振幅、激励频率、控制电流下的磁流变阻尼器的阻尼力特性、耗能特性、响应时间进行了一系列的实验研究。分析得出，磁流变阻尼器具有极强的减振耗能作用，且耗能能力随着控制电流、激振振幅和频率的增加而增大。磁流变阻尼器的响应时间随控制电流的变化不太明显，但是随着激振速度的增加迅速减小。

关键词: 振动与波, 磁流变阻尼器, 耗能, 响应时间, 剩磁