A PRELIMINARY PARAMETRIC STUDY OF ELECTRORHEOLOGICAL DAMPERS

被引:47
作者
LOU, Z [1 ]
ERVIN, RD [1 ]
FILISKO, FE [1 ]
机构
[1] UNIV MICHIGAN,DEPT MAT SCI & ENGN,ANN ARBOR,MI 48109
来源
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 1994年 / 116卷 / 03期
关键词
D O I
10.1115/1.2910315
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
In approaching the design of an electrorheology-based, semi-active suspension, the electrorheological component (ER damper) can be built as either a flow-mode, shear-mode, or mixed-mode type of damper. The source of damping force in the flow-mode is exclusively from flow-induced pressure drop across a valve, while that in the shear-mode is purely from the shear stress on a sliding surface. The dynamics of the fluid flow are included in the derivation of the zero-field damping forces. The control effectiveness is found to be strongly related to the dynamic constant (which is proportional to the square root of the vibration frequency) and, for shear- and flow-mode dampers, the ratio of the piston area to the cross-section of the ER control gap. To achieve the same performance, a flow-mode ER damper is not as compact and efficient as a shear-mode ER damper. With the same ER damping force, a mixed-mode damper is more compact than a shear-mode damper. However, the mixed-mode damper does not have as a low zero-field damping force as the shear-mode damper. The analysis is based on the assumption that the ER fluid is Bingham plastic.
引用
收藏
页码:570 / 576
页数:7
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