Mechanical parts and equipment design |
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Numerical simulation and performance analysis of magnetorheological damper based on BP and HBP rheological models |
Huijie SHU( ),Guoliang HU( ),Wencai ZHU,Lifan YU,Pinye LI |
School of Mechatronics and Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China |
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Abstract To solve the problem that the traditional constitutive model was not accurate in expressing the rheological characteristics of magnetorheological (MR) fluid, the rheological characteristics of MR fluid were tested by using the MCR302 rheometer, and the relationship between shear stress and shear rate under different magnetic fields was obtained. Genetic algorithm was used to identify the parameters of Bingham-Papanastasiou (BP) model and Herschel-Bulkley-Papanastasiou (HBP) model. The simulation model was established based on the identification results, and the dynamic characteristics of the MR damper were simulated numerically. A MR damper was designed and processed, and a damping force test platform was built to test the damping force, and the experimental results were compared with the simulation results. The results showed that the identification results of the rheological characteristics of MR fluid by HBP model were in good agreement with the experimental results. The prediction results of the two models were quite different in the dynamic characteristics of the damper, but the prediction consistency of the flow rate was good. The predicted value of damping force based on HBP model was in good agreement with the experiment value. The proposed HBP model could express the rheological characteristics of MR fluid with high accuracy and had good practical value. The research results can provide reference for the selection of mechanical model of MR damper in vibration control field.
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Received: 03 July 2023
Published: 27 June 2024
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Corresponding Authors:
Guoliang HU
E-mail: 2627079815@qq.com;glhu@ecjtu.edu.cn
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基于BP和HBP流变模型的磁流变阻尼器数值模拟与性能分析
针对传统本构模型表达磁流变液的流变特性精度不高的问题,采用MCR302流变仪对磁流变液的流变特性进行测试,获得了不同磁场下剪切应力与剪切速率之间的关系。利用遗传算法对Bingham-Papanastasiou(BP)模型和Herschel-Bulkley-Papanastasiou(HBP)模型进行参数辨识。利用辨识结果建立了仿真模型,对磁流变阻尼器的动态特性进行数值模拟。设计并加工了磁流变阻尼器,搭建了阻尼力测试平台进行阻尼力测试实验,并将实验结果与仿真结果进行对比。结果表明:HBP模型对磁流变液流变特性的辨识结果与实验结果吻合较好;2个模型对阻尼器动态特性的预测结果相差较大,仅对流速的预测一致性较好;基于HBP模型的阻尼力预测值与实验值较吻合。所提出的HBP模型表达磁流变液流变特性的精度较高,具有良好的实用价值。研究结果可以为振动控制领域磁流变阻尼器力学模型的选择提供参考。
关键词:
流变特性,
磁流变液,
数值模拟,
参数辨识
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