磁流变弹性体磁致剪切力学性能实验与仿真模拟
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1.青海大学能源与电气工程学院;2.家电网吉林省电力有限公司松原供电公司

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TM271;TQ317

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国家自然科学基金(51865049);青海省科技厅基础研究计划项目2020-ZJ-708


Experimental and Simulation of Magneto-Shear Mechanical Properties of Magnetorheological Elastomer
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1.Energy and Electrical Engineering College, Qinghai University;2.Songyuan Power Supply Company,Jilin Electric Power Company

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    摘要:

    目前关于磁控智能材料—磁流变弹性体(Magnetorheological Elastomer , MRE)宏观力学滞回模型研究较少,不利于MRE材料应用控制。为提高MRE材料控制效果,本文基于Bouc-Wen模型对MRE磁致剪切力学性能进行实验研究,分析磁场强度对于MRE力学参数的影响。首先借助 Simulink 搭建 Bouc-Wen仿真模型对MRE进行参数拟合;然后分析刚度、阻尼等材料参数随磁场强度变化规律;最后通过实验检验模型有效性。结果表明:随着磁场强度增加,MRE储能与耗能参数均有不同程度的增加,其中等效刚度与最大阻尼力增幅明显,分别提高了210.61%、205.41%;在0.5T-0.7T磁场范围内参数增长速度较快,在0.7T-1.0T范围内增长趋于饱和;采用Bouc-Wen模型对MRE动态力学性能描述效果较好,特征参数最大误差为4.42%。本文研究结果可以为MRE材料优化制备与算法控制提供理论与实验参考。

    Abstract:

    At present, there are fewer studies on the macroscopic mechanical hysteresis model of magnetically controlled smart Magnetorheological Elastomer (MRE), which is not conducive to the application control of MRE materials. To improve the control effect of MRE materials, this paper conducted an experimental study on MRE's magnetostrophic shear mechanical properties based on the Bouc-Wen model. It analyzed the influence of magnetic field strength on the mechanical parameters of MRE. Firstly, with the assistance of Simulink to establish the Bouc-Wen simulation model was established for MRE parameter fitting; then, the stiffness, damping, and other material parameters were analyzed with the magnetic field strength change rule; finally, through the experiments, the model validity was examined. The results show that with the increase of magnetic field strength, the parameters of MRE energy storage and energy consumption have different degrees of increase, in which the equivalent stiffness and maximum damping force increase significantly, respectively, increased 210.61%, 205.41%; in the range of 0.5T-0.7T magnetic field parameter growth rate is faster in the range of 0.7T-1.0T growth tends to be saturated; The dynamic mechanical properties of MRE are better described by the Bouc-Wen model, and the maximum error of the characteristic parameters is 4.42%. The results of this paper can provide theoretical and experimental references for the optimal preparation and algorithmic control of MRE materials.

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赵瑞婷,金福宝,马山刚,等. 磁流变弹性体磁致剪切力学性能实验与仿真模拟[J]. 科学技术与工程, , ():

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  • 收稿日期:2024-04-17
  • 最后修改日期:2024-05-13
  • 录用日期:2024-05-22
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