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| 钛酸钙系电流变液在直流电场下损耗模量的研究 | |
| 引用本文： | 陈恒,龚兴龙,江川霞,江万权,张忠.钛酸钙系电流变液在直流电场下损耗模量的研究[J].实验力学,2009,24(2):96-102. |
| 作者姓名： | 陈恒 龚兴龙 江川霞 江万权 张忠 |
| 作者单位： | 1. 中国科学技术大学,近代力学系,安徽合肥,230027 2. 中国科学技术大学,化学系,安徽合肥,230026 3. 国家纳米科学中心,北京,100080 |
| 基金项目： | 国家重点基础研究发展规划(973计划) |
| 摘 要： | 研究了直流电场下钛酸钙系电流变液在动态振荡剪切模式下损耗模量的变化。用流变仪测试了不同颗粒体积分数材料在不同的温度和电场下损耗模量随应变的关系曲线。讨论了颗粒体积分数、温度、电场强度以及频率对材料损耗模量的影响。以理论推导和试验数据拟合的方法给出了损耗模量与颗粒体积分数、振荡频率、温度以及电场强度等参数的半经验数学关系式。理论值对比试验结果表明，本文损耗模量表达式与试验结果符合较好，可以用于预测直流电场下钛酸钙系电流变液在动态振荡剪切模式下颗粒体积分数、温度、电场强度、频率和剪切应变对损耗模量的影响。 |
| 关 键 词： | 电流变液 动态剪切 损耗模量 |
On the Loss Modulus of Ca2TiO3 Based ER Fluid in DC Field |
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| CHEN Heng,GONG Xing-long,JIANG Chuan-xi,JIANG Wan-quan and ZHANG Zhong.On the Loss Modulus of Ca2TiO3 Based ER Fluid in DC Field[J].Journal of Experimental Mechanics,2009,24(2):96-102. | |
| Authors: | CHEN Heng GONG Xing-long JIANG Chuan-xi JIANG Wan-quan and ZHANG Zhong |
| Institution: | CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China;CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China;Department of Chemistry, University of Science and Technology of China, Hefei 230026, China;Department of Chemistry, University of Science and Technology of China, Hefei 230026, China;National Center for Nanoscience and Technology (NCNST) of China, Beijing 100080, China |
| Abstract: | Results of investigation on loss modulus of Ca2TiO3 based electrorheological (ER) fluids in a dynamic shear mode and a DC field is presented in this paper. The loss modulus-strain curves of materials with various particle volume fractions were obtained by using Rheometer at various temperature and electric field strength. The effect of particle volume fraction, temperature, electric field strength, frequency and shear strain on the lose modulus were discussed. By methods of theoretical deduction and data fitting, a semi-empirical mathematical expression relating the lose modulus with particle volume fraction, oscillation frequency, temperature and electric field strength was proposed. Simulation results show a good agreement between the expression and the experimental data. The semi-empirical expression can be used to predict the loss modulus behavior of Ca2TiO3 based ER fluids in various particle volume fractions, temperature, electric field strength, frequency and shear strain in a dynamic shear mode and a DC field. |
| Keywords: | electrorheological fluid dynamic shear loss modulus |
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