In this study, the dynamic range and dispersion stability of a shear-type magnetorheological (MR) grease damper were experimentally investigated as important characteristics affecting the performance of semi-active vibration suppression. Furthermore, the damper was applied to the semi-active vibration suppression of a small single-degree-of-freedom model structure subjected to seismic excitation. The performance test results of the damper indicated that it has a dynamic range of 157 times, which is much higher than that of conventional MR dampers. Also, because of the high dispersion stability of MR grease, the results showed that its performance can be kept for 9 days longer in comparison with a similar damper using MR fluid. Moreover, the structural vibration suppression test results demonstrated that the damper can suppress vibration response over a wide frequency range by applying skyhook-based control, which can take full advantage of the damper’s high dynamic range.

在这项研究中，通过实验研究了剪切型磁流变（MR）油脂阻尼器的动态范围和分散稳定性，将其作为影响半主动振动抑制性​​能的重要特征。此外，该减振器被应用于受地震激励的小型单自由度模型结构的半主动振动抑制。该阻尼器的性能测试结果表明，其动态范围为157倍，远高于传统MR阻尼器的动态范围。另外，由于MR润滑脂的高分散稳定性，结果表明，与使用MR流体的类似阻尼器相比，其性能可以保持9天以上。而且，