电流变体特性及电流变体应用器件的进展
STUDY OF CHARACTERISTICS OF ELECTRO RHEOLOGICAL FLUID AND ITS APPLIED DEVICES
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摘要: 本文详细评述了电流变体(ERF)材料的组成、工作机理及其流变力学性能,提出以Bingham塑性体来近似描述电流变体的流变特性,综述了电流变体在智能材料、汽车离合器、液压阀门等器件中的应用,给出了含电流变体的双层智能复合材料梁单层、双层加电状态对其振动特性的影响,设计了含电流变体的主动控制式减振器,并对其在外加电场作用下的减振性能进行了评价。Abstract: Electrorheo logical(ER) fluids exhibit changes in rheological behavior in the presence of an electric field. This paper provides a summary of the current state of electrorhe-ological fluids application and development.A critique of proposed mechanisms for the ER phenomenon, a description of basic material configurations used in controllable system components, and a discussion of controllable devices are presented. Meantime, for the double layer composite beam featuring eletrorheological fluids, the effect of electric field on the vibrational characteristics of beam is focused. The active controllable damper featuring electrorheological fluids is studied, and the vibrational characteristics of the damper are also evaluated when subjected to an external electric field.
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Key words:
- electrorheological fluids /
- rheological behavior /
- smart composites /
- damper /
- active control
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