| 磁流变液剪切屈服应力的数值计算 |
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| 引用本文： | 金昀,张培强,汪小华,吴卅建. 磁流变液剪切屈服应力的数值计算[J]. 中国科学技术大学学报, 2001, 31(2): 168-173 |
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| 作者姓名： | 金昀 张培强 汪小华 吴卅建 |
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| 作者单位： | 中国科学技术大学力学和机械工程系, |
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| 基金项目： | 国家自然科学基金重点项目(19834020)；国家自然科学基金项目(19772049) |
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| 摘 要： | 利用Maxwell应力张量，考虑颗粒的磁化饱和过程和非线性磁化过程，使用ANSYS软件三维有限元单元建立了基本力学模型，计算结果和实验取得了良好的一致，并就颗粒的体积浓度，磁化饱和强度等对磁流变液性能的影响进行了计算和比较，还构建了体心立方结构模型，初步计算了这种模型下磁流变液的剪切屈服应力。
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| 关 键 词： | 磁流变液 剪切屈服应力 Maxwell应力强量 数值计算 |
| 文章编号： | 0253-2778(2001)02-0168-06 |
| 修稿时间： | 2000-07-07 |
Numeric Computation on Shear Yield Stress ofMagnetorheology Fluids |
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| JIN Yun,ZHANG Pei-qiang,WANG Xiao-hua,WU Sa-jian. Numeric Computation on Shear Yield Stress ofMagnetorheology Fluids[J]. Journal of University of Science and Technology of China, 2001, 31(2): 168-173 |
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| Authors: | JIN Yun ZHANG Pei-qiang WANG Xiao-hua WU Sa-jian |
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| Abstract: | By using Maxwell stress tensor and the three-dimension single particle, some computation is carried our according to the MRF-132LD produced by Lord Co., after considering the influence of the magnetic saturation and non-linear magnetization. The result of the computation is in good agreement with that of the experiment. The authors continued the computation on the influence of volume fraction and magnetic saturation intensity, and arrived at some valuable conclusions. For example shear yield stress has the direct ratio to the square of magnetic saturation intensity. This work can help to improve the capability of MRF, and how to expect and improve shear yield stress of MRF. Also, CCT model was consfracted and some computation was condacted. |
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| Keywords: | magnetorheology fluids shear yield stress maxwell stress tensor |
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