STUDY OF EFFECT OF VISCOSITY RESISTANCE IN ELECTROFHEOLOGICAL FLUID BY MICRO GRAVITY EXPERIMENTS

微重力实验研究电流流变粘度阻力的影响

• 批准号: 22654044
• 负责人: TAKEDA Mitsuo
• 金额: $ 1.96万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22654044/
• 关键词: 流体物理学; 電気粘性流体; 粘性抵抗; 無重力下実験; 自由落下実験; 誘電分極

We reported the first observation of electrorheological(ER) effect in a single phase ER suspension, comprising mono-dispersed dielectric particles, from a microgravity experiment. A highly sensitive electro-rheometer was designed for the measurements and the results show that, in the microgravity environment, the particles can form stable single phase suspension without a suspending liquid, which is usually necessary for the conventional ER fluid. It is found from the experiments that the size of the column structures formed by the particles exceeds the maximum column width usually observed in the two-phase ER fluids. Finite element method(FEM) was used to evaluate numerically the variation of the electric energy density with respect to the strain, and the results yield a good account of the measured data, especially in the low field region.

我们首次通过微重力实验观察到单相 ER 悬浮液中的电流变 (ER) 效应，该悬浮液包含单分散介电颗粒。设计了高灵敏度的电流变仪进行测量，结果表明，在微重力环境下，颗粒可以形成稳定的单相悬浮液，而无需悬浮液，而这对于传统的电流变液来说通常是必需的。实验发现，颗粒形成的柱结构尺寸超过了两相电流变流体中通常观察到的最大柱宽度。有限元法（FEM）用于数值评估电能密度相对于应变的变化，结果很好地说明了测量数据，特别是在低场区域。

项目成果

微小重力下における電気粘性液体の挙動と応用

微重力下电流变液的行为及应用

• 发表时间: 2011
• 作者: 余野建定;武田三男;宮丸文章;増野敦信;趙国慶;沈平;温維佳
• 通讯作者: 温維佳