Dynamic Characteristic of MR Damper Based on Simplified Model

邬喆华; 楼文娟; 陈勇; 唐锦春; 孙炳楠

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Dynamic Characteristic of MR Damper Based on Simplified Model

更新时间：2025-12-11

- Dynamic Characteristic of MR Damper Based on Simplified Model
- Issue 1, Pages: 99-104(2004)
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  CLC： P21
- Published：2004
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[1]邬喆华,楼文娟,陈勇,唐锦春,孙炳楠.基于简化模型的MR阻尼器动力特性[J].防灾减灾工程学报,2004(01):99-104.

邬喆华, 楼文娟, 陈勇, et al. Dynamic Characteristic of MR Damper Based on Simplified Model[J]. 2004, (1): 99-104.
[1]邬喆华,楼文娟,陈勇,唐锦春,孙炳楠.基于简化模型的MR阻尼器动力特性[J].防灾减灾工程学报,2004(01):99-104. DOI：

邬喆华, 楼文娟, 陈勇, et al. Dynamic Characteristic of MR Damper Based on Simplified Model[J]. 2004, (1): 99-104. DOI：

摘要

按照结构减振效果位移RMS等价的原则提出的简化模型

分析了MR阻尼器的动力性能。MR阻尼器的等效粘性阻尼系数随施加电压的升高、频率的降低、振幅的减小而提高。施加电压在0～5V时

等效粘性阻尼系数变化幅度较大;达到10V后逐渐趋向饱和。低频、小振幅区域在施加的电压不为零时等效粘性阻尼系数比较稳定

而施加的电压为零时等效粘性阻尼系数随着频率和振幅的升高迅速下降。MR阻尼器可调性主要集中在高频、大振幅区域。MR阻尼器的等效刚度系数约为等效阻尼系数的0.1倍。等效刚度系数随施加电压的降低、频率的增大、振幅的增大而提高。施加电压在0～5V时等效刚度系数变化幅度较大

达到10V后逐渐趋向稳定。

Abstract

Based on equivalent root mean square （RMS） of structural deflection criteria

a simplified model is established for MR damper used in passive control. The mechanical performance of MR dampers is related to applied voltage

displacement amplitude and frequency. The equivalent viscous damping coefficient （EVDC） and the equivalent stiffiness coefficient （ESC） capture the salient features of MR dampers. EVDC has larger variation when applied voltage is in the range of 0 V to 5 V and it come to saturation with voltage reach 10 V. When MR damper applied voltage vibrates in the region of lower frequency and small amplitude

stable EVDC is obtatined. When voltage is equal to 0 V EVDC decreased rapidly with the increase of frequency and amplitude. The transformation of MR damper mainly concentrates on the region of higher frequency and larger amplitude. The size of ESC is about 0.1 time that of EVDC and the factors influence upon ESC is discussed.

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references

MR阻尼器对斜拉索减振控制的数值仿真 [J]. 邬喆华,楼文娟,陈勇,倪一清,高赞明. 中国公路学报 . 2006(01)

磁流变阻尼器对斜拉索减振效果的试验研究 [J]. 邬喆华,陈勇,楼文娟,孙炳楠,唐锦春,倪一清,高赞明. 振动工程学报 . 2004(01)

磁流变阻尼器对斜拉索振动控制的研究 [D]. 邬喆华. 浙江大学 2003

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