圆盘式磁流变液制动器的设计与研究

发布时间：2018-04-15 16:41

本文选题：磁流变液 + 圆盘式　；参考：《齐鲁工业大学》2012年硕士论文

【摘要】：磁流变液(Magnetorheological Suspensions,MRS)属于可控流体,可以看成是电流变液的磁模拟,没有外加磁场作用时,它从外观上表现为牛顿流体特性；然而在外加磁场作用下,在几毫秒时间内其流体外观形态和性能会迅速发生改变,表观粘度系数大幅增加,液体的流动表现出Bingham塑性体行为,具有粘性和塑性特性；当外加磁场强度发生变化时,其屈服应力也随着发生变化。且这种变化是迅速、连续、可逆、容易被控制的,国内外众多学者和工业界科学家都对其产生了广泛的兴趣,在工程领域具有广泛的应用前景。在这一特性基础上设计的磁流变液制动器具有制动平稳、响应速度快、能耗低等优点,已经在工程领域得到了广泛的应用,本论文设计的磁流变液制动器是一种利用磁流变液剪切应力来进行制动的装置,当外加磁场发生变化时,制动力矩也会随着改变。本文从理论着手,通过实验的方式研究了磁流变液在制动器中的应用：本文首先对磁流变液的材料及流变特性以及本课题的研究内容及意义进行了介绍,接着介绍了制动器的工作原理,磁流变液制动器的工作模式及特点；并着重介绍了剪切式制动器的工作原理,并根据以上知识,设计了磁流变液制动器,其中包括磁路设计和圆盘式制动器结构设计,最后对设计的磁流变液制动器进行了实验研究。最后在前文基础上总结全文,提出了论文的创新点及以后将要进行的的工作。
[Abstract]:Magnetorheological SuspensionsMRS (MRS) is a controllable fluid, which can be regarded as a magnetic simulation of electrorheological fluid. When there is no external magnetic field, it appears to be Newtonian fluid in appearance; however, under the action of external magnetic field, it is characterized by Newtonian fluid.In a few milliseconds, the appearance and properties of the fluid will change rapidly, the apparent viscosity coefficient will increase greatly, and the liquid flow will exhibit the Bingham plastic body behavior, with viscosity and plasticity, and when the applied magnetic field intensity changes,The yield stress also changes with the change of yield stress.This change is rapid, continuous, reversible and easy to be controlled. Many scholars and industrial scientists at home and abroad have a wide range of interests in the field of engineering and have a wide range of application prospects.Based on this characteristic, the magnetorheological fluid brake, which has the advantages of stable braking, fast response speed and low energy consumption, has been widely used in the engineering field.The magnetorheological brake designed in this paper is a kind of braking device which uses the shear stress of the magnetorheological fluid. When the applied magnetic field changes, the braking torque will also change.In this paper, the application of MRF in brake is studied by means of experiments. Firstly, the material and rheological characteristics of MRF, and the research content and significance of this subject are introduced.Then the working principle of the brake, the working mode and characteristics of the MRF brake are introduced, and the working principle of the shear brake is emphatically introduced, and according to the above knowledge, the MRF brake is designed.It includes magnetic circuit design and disk brake structure design. Finally, the design of MRF brake is studied experimentally.Finally, on the basis of the previous summary, the innovation of the paper and the work to be done in the future are put forward.
【学位授予单位】：齐鲁工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH134;TB381

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