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Research on Rotary Disc-Type MRF Dampers with Nonhomogeneous Magnetic Fields

机译：非均匀磁场的转盘式MRF阻尼器的研究

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摘要

In this paper, based on the analysis of the damping torque of rotary disc-type magnetorheological fluid (MRF) damper, a new kind of MRF disc-type damper is proposed. The working disc of the new kind of damper has a wedged shape that results in variable working clearances, and hence a nonhomogeneous magnetic field is produced. The magnetic resistance of the MRF filled in the variable clearance is analyzed and the impact of the produced nonhomogeneous magnetic field on the damping torque of the damper is studied. Experiments are conducted and the damper performance under steady shear rate is evaluated with an author-designed test stand. The experimental results show that under the same exciting current and other conditions the output damping torque produced by the MRF of the new kind of damper is much greater than that of the ordinary dampers with parallel disc surfaces and constant working clearance.
机译：本文在分析转盘式磁流变液（MRF）阻尼器的阻尼扭矩的基础上，提出了一种新型的MRF盘式阻尼器。新型减震器的工作盘具有楔形形状，可导致可变的工作间隙，因此会产生不均匀的磁场。分析了填充在可变间隙中的MRF的磁阻，并研究了所产生的非均匀磁场对阻尼器阻尼扭矩的影响。进行实验，并使用作者设计的试验台评估稳态剪切速率下的阻尼器性能。实验结果表明，在相同励磁电流和其他条件下，新型阻尼器的磁流变矩器产生的输出阻尼扭矩远大于具有平行盘面和恒定工作间隙的普通阻尼器。

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