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马宁
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副教授   博士生导师   硕士生导师

性别: 女

毕业院校: 哈尔滨工业大学

学位: 博士

所在单位: 土木工程系

学科: 结构工程

办公地点: 土木学院4号实验楼329

联系方式: maning@dlut.edu.cn

电子邮箱: maning@dlut.edu.cn

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The contribution of friction to electrorheological properties of a chrysanthemum-like particle suspension

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论文类型: 期刊论文

第一作者: Dong, Xufeng

通讯作者: Dong, XF (reprint author), Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China.

合写作者: Ma, Ning,Yang, Hui,Han, Baoguo,Qi, Min

发表时间: 2015-08-25

发表刊物: RSC ADVANCES

收录刊物: SCIE、EI、Scopus

卷号: 5

期号: 91

页面范围: 74656-74663

ISSN号: 2046-2069

摘要: Several studies have proved that a significant electrorheological (ER) effect can be obtained by using particles with hierarchic structures as the dispersing phase. The inter-particle friction and fluid friction caused by the rough surface of the particles plays an important role for their enhanced ER effect. However, the detailed contribution of friction to ER properties remains unclear. We prepare two different ER fluids with chrysanthemum-like particles and spherical particles, respectively. We carry out a low shear velocity oscillation test to separate the friction-induced shear stress from the electrostatic attraction-induced shear stress. The chrysanthemum-like particle-based ER suspension presents much better ER performance than the ER fluid with spherical particles. The larger friction force caused by the rougher surface of the chrysanthemum-like particles is a major reason for the improvement. The contribution of friction to the ER effect depends on the electric field strength. The contribution has a maximum value at a critical electric field.

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